Okay. No.
I'm viewing the jerks who keep putting themselves at the forefront of the movement who don't know how to behave as garbage. They and their posts and actions are the garbage. And I feel I was VERY clear about that.
Still, point stands. You said you won't even bother to engage a fan of the OSR unless you felt they were saying something bad. Then you also painted the whole group as having a "giant marquee hovering overhead with 'NEGATIVE TRAITS HERE'. Seems like you're painting with a broad brush anyway, but leaving that aside for a moment...(along with the strawman that OSR fans are asking everyone else to ignore the bad actors)
If you're gonna take the position that you don't have to try to be welcoming of any fan of an older game because of some of them doing bad behavior, how would you feel if it were on the other foot? I.e., how you feel if a forum like this said, "Newer fans keep spewing garbage (phrases like 1e is nothing more than a murder simulation of black people, or that anyone who likes 1e is a racist), so we won't make any effort to engage in a conversation with any of these new fans unless it's to call them out."
That's still problematic. Any time you're generalizing an entire group of people based on bad actors is going to be problematic. You can do that on your own time, sure. No one is saying you have to talk with anyone you don't want to in your personal life.
But by posting here, we are part of a group; a community. And when you're part of a community, you have certain responsibilities. Forum rules are one. Unspoken civility is another. You can choose to not want to follow the forum rules which is perfectly fine, but then you need to do that elsewhere. As part of this community of gamers in general, I feel that it is our unspoken responsibility to try to be welcoming of everyone regardless of what edition they like, because we are all fans of D&D, and the game is better when we all have a voice. If you don't want to be part of the community, that's your choice. But posting here and engaging in conversation infers that you do in fact want to be part of this community. No one is forcing any of us to be here or part of this community if we don't want.
Edit I'm also not saying you have to go to the effort to make positive posts about a style of game you don't like. All I'm saying that we shouldn't be making pejorative generalizations about all fans of a particular edition, because it makes the area unwelcoming to them when we do.