Now, if what I'm interpreting is correct (and feel free to set me straight if I'm incorrect), your argument stems from a moralistic one. Moralistic arguments are not solid stances to argue from; similar to a hardcore Christian seeing abortions as vile and evil because of a personal moral stance, you feel your moral position is better, therefore you look down on opposition. However that is a personal opinion and those aren't convincing - certainly not for sensitive topics. Let's approach the debate from a scientific standpoint.

Trying to stick to the logic of the situation, the crux of statements I've seen here seem to be “Being vegan is eliminating suffering and therefore should be the end goal.” Is that not correct? I’m not arguing in bad faith like many here or making a shitty “bacon = good” joke. I want to make sure you’re not being misinterpreted.

Other reasons I have seen in threads similar to this coming from the "angry vegan" side of things (and some responses to those) are:

If you want to be vegan because you enjoy it? Go for it. That is inarguable. It's no more or less valid than someone liking the colour red.
If you want to be vegan because you feel it’s healthier? Rock on. Go you! You are probably correct if you monitor your diet. I would argue against it being better than a vegetarian diet however.
If you want to be vegan because it’s easier on the environment? Well, for individuals? Yup! At the moment, you could make a good case that it would be better for the planet, but only because we’re overpopulated and statistically, being vegan is unsustainable if the entire planet were to switch tomorrow. A smarter case to make would be for a reduction in humans as being vegan is an extremely minor step of harm reduction compared to fewer people. Also, most food fed to livestock is not human-consumable and is often byproducts that would otherwise go to waste. Creating more food from waste is more efficient than discarding it.
If you want to be vegan because you don’t like factory farms? Sure, I hate them too, however quitting animal products altogether is not a logical jump to make from that feeling. There are plenty of smaller suppliers you can procure from that do not have those issues; the more logical jump is to just not use bad providers no matter what the product. For example, I have raised bees and worked in a co-operative apiary. There was no abuse, and the likely alternative to us creating the hives was death for the entire bee community. Tell me how being vegan is better than creating my own honey and essentially creating hives and colonies from scratch, but using animal products in that instance.
If you want to be vegan because it’s eliminating suffering (or death)? Again, kind of. This is simply making substitutions for suffering that you’re comfortable with. You can make an argument that it's somehow lesser, but it's bad logic and therefore a bad argument. You’re also applying your own morals (because again, this is a strictly moral standpoint) to other people, which is silly no matter who is doing it. From activists to religious extremists, your morals apply to you and only you. Do not try to enforce them on the outside world. You can argue for them, but getting mad at anyone with a differing view is silly and unproductive. As you said (and dismissed), you can lessen suffering or death, but you can not eliminate it. Your existence causes death. All existence does. Everything alive is only alive because it feeds off other living things who have their own way of existing. A suffering or death being a style you choose to not recognize is not only not a valid defence, it makes you just as guilty as those you attack. Your opposition also feel that their being is higher than those they ingest and they also do not recognize the deaths of those they consider lesser, they simply drew their line elsewhere.

And the way vegans are going about it in these threads isn’t helpful to your cause. Mindless emotion-driven downvoting does not change hearts or minds.

A better outreach for you would be to use the Food subs and post legit great vegetarian food and entice people that way. Doing it the way they are now will accomplish nothing of value. Well, unless they secretly work for a factory farm and want to piss people off so they eat more meat, in which case those psuedo-vegans are doing exactly what they should be in these threads which is mindlessly downvoting instead of engaging.

Feel free to ask for sources for any statements I made that aren't related to personal preference. I can back up everything with peer-reviewed studies.