My opinion is that we live in a world that's more and more divided and that stems from extremists being given platforms to easily spread their message and pull people in. Extremist terrorism is on the rise and people (especially social conservatives) are frequently seen assembling in huge numbers to protest, something that hadn't happened in decades (not in the number of times or the number of people anyway) in most of the the western world.
It's better to allow them to exist in their corner with little interaction with the rest of the world like they used to during the 80s to early 00s than to give them a platform to find gullible people in search for easy answers to recruit.
However there are people with legitimate ( beliefs and ideas honestly held that they wish to discuss ) views that I worry are going to be silenced and further marginalized.
The vast majority of them don't wish to discuss because their beliefs aren't built upon rational foundations. If proven wrong with facts they use irrational arguments to defend their point of view. If experts intentionally don't argue with them then what are we doing arguing with them as laymen? Heck, arguing with them just gives them more space to share their message and convince people.