Do I understand correctly, what you mean is that there is an Invidious instance to which two users are connected. User A sends request to Invidious to get a video, Invidious forwards it to user B, user B downloads the video and sends it back to user A?

Sounds a lot like Tor or maybe I am missing something?

Sounds cool asf, probably the way private messaging apps should be

Although, it is not really fitting my threat model, I would love to see how it develops

You recognize patterns by observing long-term trends, not by overreacting to whatever most outrageous news headline you see right now

Who are you referring to as “the whole world”, specifically? People on Lemmy? Leftists? Your friends IRL?

His salute does not affect your life in any meaningful way unless you let it do so.

If we ban centralization then IRC, Signal, Xenforo, vBulletin

Signal is not social media, IRC is an open protocol, isn’t it? I do not know about the rest.

Even when you have federation, each unit in that “web” will usually have a centralized moderation team and administration.

I do not have a problem with that. The problem with centralized social media is that users are locked in to using some specific app because all their friends are there, which makes it harder to switch. This gives monopolies like Facebook an unfair advantage.

Can you suggest a comparable alternative?

I dunno, how Lemmy does this?

Do you mean that they at most should be non-profit? And if so, why?

Yes I mean that. For-profit social media profits from increasing user engagement, even if that means through getting people addicted, intentionally not dealing with misinformation (because misinformation is usually more outrageous and gets people more engaged), data collection and other unethical practices, all because shareholders need the line to go up.

I support blocking commercial, proprietary and centralized social media everywhere.

Stop switching to every new “cool” and “encrypted” service every time the previous one disappointed you a little bit. This is not helpful neither for your time, nor for privacy community overall. We should lean on most developed and best platforms we have right now (Proton, Signal etc.) and get everyone to switch. Unless we know we have market dominance, dispersing our efforts is futile.

And yep, answering your question, Tuta Mail is fine

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Graphene OS - best privacy and security, only for Google Pixel phones

Calyx OS - less secure but supports cheaper phones (Motorola) and eco-friendly phones (Fairphone)

Honorable mentions are LineageOS, /e/ OS, Replicant and iode OS, however their security is much worse than of Calyx/Graphene (no verified boot), so use at your own risk

Yes, they exist, but there is no reason to use them other than tinkering around. Also they have much worse security than Android or iOS. So if you need something private and open source there are a plenty of degoogled Android ROMs.