It would not surprise me if these actions are coming at the requests of governments. Strong encryption is one of the few things that challenges their monopoly on information; they have a very strong incentive to apply political pressure to the maintainers of these projects to, well, stop maintaining the projects. We've seen this in overt actions that the EU takes; in more covert actions that the U.S. government is suspected of taking; and in the news headlines about third-world dictatorships that just shut off the Internet. Tech companies are perhaps the most convenient leverage point for these actions.
More regulation won't help here, because the regulation-maker is itself the hostile party.
What would help is full control over the supply chain. Hardware that you own, free and open-source operating systems where no single person is the bottleneck to distribution, and free software that again has no single person who is a failure point and no way to control its distribution.