1. Someone who is radicalized digging deeper
2. Someone who is radicalized changing their mind
3. Someone who is not radicalized getting radicalized
#1 is bound to happen, #2 has no chance of happening, so at this point, preventing #3 is the way to go. Keeping these already radicalized people on Youtube achieves nothing. On the other hand, keeping them on Youtube gives these them a huge platform to spread misinformation. Newsmax nad OANN don't have anywhere near the reach Youtube does, especially outside the existing bubble.
A point so simple it feels silly to point it out, but here we are.
The rate of spread is a problem of YouTube's own devising based on clicks, views and likes. Remove this gamification and you'll see less engagement, hence less scale of radicalization.
With youtube labeling people "radicals" is a deliberate polarising term designed to do little more than tar and feather people into a specific box. Just like segregation, just like Protestants, just like the German Jews... Etc. It's very unflattering.
https://mediabiasfactcheck.com/newsmax/
"Overall, we rate Newsmax Right Biased and Questionable based on the promotion of conspiracy theories and pseudoscience as well as numerous failed fact checks. (M. Huitsing 10/8/2017) Updated (11/12/2020)"
https://scholar.google.com/scholar?hl=en&as_sdt=0%2C22&q=red...
The real danger is that, one day, your own ideas are the ones considered too radical.
True. Worse, the acceptable range of opinions within both the US right and the US left have narrowed.