I would very much like to avoid Meta (FB, Instagram, Whatsapp and anything else Zuckerberg owns), Twitter and now Reddit influences in the fediverse. Not only do I not want to see content on their servers but I would also like to avoid giving them content from the fediverse and tracking info about fediverse users.
On a side-note, if you are referencing a community on another instance in a post like this next time it might be sensible to subscribe to that community from here so it is already cached when people see your post about it.