It's very difficult not to rely on big tech for communication... It's a spectrum of how much you use it. Do you avoid Facebook... But use reddit? Avoid reddit, and use lemmy? Does the lemmy server live in Amazon Web Services, or is it self hosted? Do you host it on your hardware, then use a commercial ISP like AT&T? Are you building out your own LoRa mesh to communicate on, using hardware you bought off Amazon?
I'm not saying it's a pointless effort. I think it's a very bad look to try and use AI generated images for protests and stuff like that... But still, I think it's ridiculous to try and pretend you're above using or relying on big tech, then taking an Uber out to a restaurant and paying with your Android or iphone that you fed all your credit cards to out of convenience.
I would love to know what the person claims is a more "practical, secure, and convenient" solution that doesn't rely on big tech