What I'm against is the mandatory registration to get a key signed by a party we don't elect, who controls all (soft-mandatory^1) devices that aren't controlled by the other party we didn't elect, and both are controlled by a government that we have no say in and is acting increasingly hostile towards everyone but fellow belligerents (Israel, Russia.. seeing a pattern here).
Your "it's just a bit annoying" argument seems irrelevant compared to that, even if it would reduce scams, which I have seen no evidence for or against. Did you find or come across any evidence for it?
^1 https://news.ycombinator.com/item?id=47940687
> the market for scam victims is much bigger than the market for sideloaders
That makes no sense. Of course the market for "scam victims" is current-earth-population.com minus one (the person doing the scamming); this is a universal constant you're comparing against
If you mean the number of people who would potentially get scammed by being told to do a dozen steps to install some app which can barely do more to aid the scam than a webpage could, then I'm interested in how you end up with those figures!
Given that maybe every 20th person is decently tech-literate and that I have yet to come across a scam where installing software on your phone is a component of it (including via google's; just any kind of mobile software installation), the way I figure the "market sizes" are about 400 million to somewhere around nil