Nothing about Lemmy would suggest people would like Epic anymore than any other place on the internet. Their exclusivity deals have the potential to upset anybody regardless of what website they post on, so while there's absolutely a degree of hivemind hatred, it's rooted in understandable reasons.
That being said, it's disingenuous of that person to imply that Epic never gives any good reasons to use the platform, the biggest being the waves of free games they put on "sale" from time to time, though you could go down another rabbit hole of whether thats really something that would make gamers want to use the platform, or if it's just a nice bonus people pop in to claim while still spending their money on Steam when it comes to actual purchases.