People need to let the "the left eats itself" meme die. The right has as much, if not more, infighting and yet there's no equivalent meme (conservatives vs tea party, alt-right adjacents vs never-trumpers, the religious right vs libertarians, etc and etc).Another issue the left has when it comes to deplatforming. Often they fall into traps like this in their fervor to be the voice of the righteous. I've often seen leftists mock and shame other leftists over misunderstandings or just straight up people not staying in their lane. There's so much infighting that often causes leftists movements to lose to a fairly uniform right movement.
Falling for gaslighting doesn't 'cancel' you. It's a learning opportunity and a moment for growth.
Warning people not to fall for trolls is not an attack. It's a warning to stay vigilant for people without good intentions.