I haven't logged onto Facebook in some 6 years now, so I can't really do much more to boycott them.

That's the big issue of the post truth era. I imagine the number of people "using these platforms despite what we know" is minuscule. Most will never hear of this, and many who do know have probably left long before this for the other dozens of crimes against humanity Meta's performed.

Of the rest of this list. Youtube Premium is the only thing I'm still subscribed too. I actively unsubbed from Prime and am setting up to unsub from Google One.