Everyone is applauding this because they hate Trump, but take a step back and see the bigger picture. This could backfire in serious ways, and it plays to Trump's base's narrative that the mainstream media and tech giants are colluding to silence conservatives (and maybe there could even be some truth to that.) I know the Valley is an echo chamber, so obviously no one is going to ever realize this.
Ultimately the more and more "dangerous" opinions and people who share those opinions are silenced the more and more dangerous they become in reality.
EDIT: The nature of this comment is intended to be observational not advocational.
Deplatforming works.
Although it may mean fewer people become part of the community it would also mean that those that remain with it are now more isolated from the outside world and increase the precieved level of persecution? Would this then correlate with an increase in action?
I don't know the answer to this, it seems logical to me that each of these answers would be yes, but I definitely think it is a topic worth investigating and discussing.