I have stopped communicating with friends and family who try communicating via insecure apps. I send a response saying I will only read Signal or similar messages from them. Some think this is a hardline, but my security is important to me, and true friends and family need to respect that. It's kind of like how my sister is vegan, so when she comes over for dinner, I cook vegan dishes for her. I respect and accommoda…
If your threat model DOES include US intelligence agencies, you shouldn't use almost any mainstream browser, most protocols (including https://), social media (including HN), etc...