No one has said that bad behavior due to emotional bleed should be celebrated, allowed, or go unquestioned or uncensured.
The point is acknowledging that most or all players experience emotional bleed at one point or another, but that having the feelings themselves doesn't need to be shamed, as this can actually make things worse. When someone feels shitty about something that it's not appropriate for them to act on, if they also feel shame for experiencing those emotions, it actually compounds the issue. It will make negative, destructive, or toxic behavior more likely.
That's why the point of the thread was "what are the good and HEALTHY ways to deal with and process bleed." I said "don't shame people for having feelings" specifically because I think it's more helpful to just accept that people are going to have feelings, and instead focus on the resulting behaviors. How do we process those moments of bleed so that it doesn't become an issue in our actual gameplay or end up on someone else's lap? It's not about allowing bad behavior resulting from bleed.
It's moving the thought process from "If you have any feelings of bleed, you're bad" to "If you have feelings of bleed and let them impact others or the game, that's shitty." Assume that everyone is likely to experience some bleed at some point. Take that as a given. Focus on what they actually do in response to it.