I can't necessarily argue the exact wording that you used "prominent", because the folks you listed are certainly no longer visible in the most mainstream venues, but do you really think Alex Jones has lost a lot of the audience that was deep into his content. If anything this just makes him into a martyr and gives his arguments additional fuel because "they don't want you to know the truth".
The problem is not the 100,000 people who have constructed their whole lives around Alex Jones, that's what Alex Jones had for 20 years of being a mostly harmless crank who makes a good living at it.
The problem was giving him access to a much broader public, to sow paranoia and FUD among tens or hundreds of millions of people who actually play important roles in society and don't have time to spend debunking everything they hear.
Yes, I absolutely believe that Alex Jones has lost some of his audience since being "deplatformed". Some of his audience will continue to follow him, some will continue to follow some other source of cray, and some will wander out of the fever swamps. I consider this a positive outcome, even if it's not a perfect one.
Also consider that he's lost a lot of his ability to grow his audience, which is no small thing.
I do believe he has lost a lot of juice, but even if the hardcore viewers have stuck with him, he at least is not growing anywhere as fast anymore. If anything, this means he should've been deplatformed much sooner. The longer you wait, the more you are allowing them to grow their roots in.
