
This always be a thing because people RP for different reasons. A lot of us roleplay as a form of story telling, and so while our characters are complex, as is our internal muse and love for said characters, ultimately the STORY is of more value and importance. We can have our characters fail, or screw up, or even have not-so-virtuous moments and it isn't personal.
For the other kind of RPers, though, everything about their character is personal. They RP to experience a fictional life as a fantasized version of themselves, and so anything that violates that fantasy doesn't sit well with them, and there is no greater example of busting someone's fantasized self-bubble like expecting or asking them to act "human" or flawed...or, you know, having consequences to their character's actions. These are the kind of RPers who make Mary Sues and Gary Stus.
For the other kind of RPers, though, everything about their character is personal. They RP to experience a fictional life as a fantasized version of themselves, and so anything that violates that fantasy doesn't sit well with them, and there is no greater example of busting someone's fantasized self-bubble like expecting or asking them to act "human" or flawed...or, you know, having consequences to their character's actions. These are the kind of RPers who make Mary Sues and Gary Stus.