Well, it's simple, most gamers think Bethesda is one of those faithful companies that act like good indie devs and support their fans, so they trust Bethesda Softworks to make good games, saying they're not like evil EA. if only they knew...
Really the primary determining factor in how the games interested public seems to perceive whether you're evil or not is not simply "did you do the thing we don't like" but "did you do the thing we don't like often enough that enough people started noticing." Like people didn't seem to notice how formulaic most Ubisoft games are until they started churning out Assassin's Creed games every year.
EA just ends up as "evil" because they're much more prolific than a lot of other publishers.