What makes Epic "the most unethical game vendor"? Real question. The criticism I always see is "I already have a library on Steam and don't want two clients", which is understandable, but it!a hardly unethical to just exist.
Edit: Damn, people real don't like you asking totally fair and reasoned questions about the accepted narrative around here, huh?
Yeah, that is a pretty shitty, anti-consumer practice. Still not entirely sure I'd give them the award of the most unethical, but that only speaks to the absolute shittiness of corporation, really.