I use PGP, but it is a pain in the ass to use, severely stunting its usr. Normal people can't effectively use PGP without significant training, hence no one outside some DMCA notice bots using PGP in production for the common person to see.

Even Riot with its fucked up key mismanagement is easier to use as a normie than PGP, though its looking like Riot will fix most of those trusted key management issues soon with the PRs that are about to land.

Signal is the gold standard for secure, easy to use crypto at this point IMO. Hopefully Briar continues to improve tho, normie friendly metadata free communication is highly alluring, and the key management is a middle ground between Riot and Signal.