Some Elon but also a huge amount of Indian users who are leaving whatsapp en masse and have a different culture of online conduct that many westerners aren't used. The replies on the signal Twitter account make this very apparent if you don't want to dig through the forums.
I'm up to 50 or 60 new Signal contacts since WhatsApp announced their latest privacy policy updates. (That's actual friend/acquaintances rather than just people I once added to my contact list like ex cow workers or clients/vendors - there's probably another 50 of those as well.) This is largely (but not exclusively) people in Australia.
Reminds me of the 2020 Hacktoberfest. Tons of users would submit spam PRs, when you'd close them and tell them to read the contribution guide they'd start personally attacking you.