Hear hear! I deleted my Facebook 2007'ish and never joined Instagram, Twitter is only traditional social media site I use, so I can attest to those checking out (or never joining). Even with Twitter, I have to make an effort to not "doom" scroll before bed.
Circles looks cool as decentralized and E2E are fascinating to me. Glue doesn't have a whole lot in common with Mastadon, but similar microblogging features I believe.
Hit me up sometime, would like to hear more about your project. - noah@ark.fm