Simple answer, no.
When you have the power of the FERAL GOVERNMENT at your disposal, you have literally unlimited power to trace any source, legally or illegally..................
If you look at the Revolver article, it appears the owner of the libsoftiktok accounts also owned several other accounts and a website and they registered them all using the same location.
The IT research that was done accessed the twitter API and retrieved information about the user to track the owner down.
It might defeat the Federal Government, but it might defeat the people that doxxed libsoftiktok...
The other approach I thought of would be to have a team of people working together offline to own and create content all using anonymous tools.
I used to tell people there IS a surefire way to do it, even if the fedgov is involved, at least for a while. It involves what I posted above as well as storing your computer and disguise in a storage unit somewhere. But where it gets complicated nowadays is that there are cameras simply EVERYWHERE. So they can backtrack you from the location via ring cameras, etc., possibly all the way to the storage unit.
Of course, once they track you to the location you use, they can simply stake it out, which is why you’d need to use a different location every time. Maybe riding a bike there from a parking spot where you know there is no camera surveillance nearby.
Anyway, it can be done. You just have to be anal about it. And even then there are no guarantees. And no, I’ve not actually done this. I just like to think about ways to thwart “the system”. Way back in 1972 a workmate asked me why I was always thinking of ways to rip off the company. I told him it was just fun to find security risks. Looking back in hindsight, I probably should have gone into security.