I think what people on HN really forget is that the average person isn’t equipped to tell the difference between a legit source sideloaded app or a Trojan horse app that some TikTok video instructed them to install.
I wonder if they could solve that with delays. E.g. you can sideload, but the process is deliberately delayed to take two full days and require carefully reading warning screens and correctly answering questions about the warnings, then getting time to think, multiple times.