Did they think that about Telegram? I thought it was quite popular despite that.

They are being ironic here

None of your arguments are really an answer to anything.

Every app, telegram, simplex, ICQ are single points of failure - by design - whereas services like xmpp/jabber or even the self hosted variants of signal, simplex or matrix don't have these problems. But they don't do that. At least nothing that I heard of.

I think the reality is much more that most of the Nazis are inherently not constructive. They don't create anything, they have no real vision, just hate for whatever group they think is worst right now.

They are literal leeches, they take over what they can get. Telegram, Twitter, now SimpleX. Volk ohne Messenger, if you want. There is exactly one platform that was created by them, truth social, and that's a grift by Trump and his team, not something growing from within the community.

There is absolutely a corrolation between being stupid and being a neo-nazi. However, in this regard smart people are even more dangerous since they are not only capable of fooling themselves but others as well.

Nazis and their like don’t use reason or logic. Many aren’t able to plan ahead. Their entire ideology requires shutting down big portions of one’s brain to become a frothing reactionary, impermeable to any information which could change their hateful views.

They don’t create things, they mostly aren’t very tech savvy, and all look for a leader to tell them what to do (go look at their forums, they’re all busy accusing each other of being glowies, just itching for Trump or someone else to give them “the signal” for them to act).