Your stance is removing yourself from the conversation.
Meanwhile, in this moderate preacher and congregation allegory, the congregation has not left the building, because there is no leader to explain to them why they need to shut the trolls out of their life, so they are sitting ducks to become radicalized.
This is what grandparent was saying afaict - moderating voices leaving the conversation capitulate the space to the radicals.
The moderating voices are tired of explaining to people that the earth is not flat, so they are leaving. So the flat earthers can take to the pulpit.
FWIW my strategy is to build a better church down the road. I don't know if I can make it more appealing than the megachurch dominated by trolls, but I think a lot of people are looking for something different.
How would you act instead? In the eyes of a someone with a sufficiently incompatible position you are a loonie who gets ignired after the dirst dissenting statement with a simple mouse click, never to be seen or heard from again on that platform. This is just so much easier than in the real world.
1) Exit social media and save yourself. This is the best option
2) With unending patience, choose an individual and just interact with them at a human level till both sides achieve understanding ( no matter how distasteful or difficult the process ). This does not scale
3) Begin to invest in PR, think tanks, media firms, groups and so on to craft a message to sway large groups of people at one go. This scales and what most people are resorting to, and what is creating the problem in the first place.