@MindOfJoe @kinetix I quite agree with this - adoption only matters if you need a lot of people to exploit and skim off money, or to commercial software that costs money. It's nice that Signal seems to be currently trustworthy, but E2E is also just that right now: nice to have.
Now, if it becomes crucial, then only the people to whom it becomes crucial need to think about this and use PGP/GPG, and they have no need to care whether anyone besides their group is using it.
In the final analysis, it never actually mattered whether Apple capitulated or not, because most their users are from the first paragraph, they have nothing to hide and nothing to fear, as they say. If you're already doing shit you need to hide from the gov, you deserve to get caught if you trust a corp.