Yeah, but it is still just one account per number, so it would make managing alts annoying. Not only is the main client (as well as the major unofficial ones, haven’t found one that doesn’t do that) not support multiacc directly, forcing use of profiles or VMs, but you’re also at risk of whoever rents the associated phone number after you deleting the account (that or you could pay a recurring fee just to retain the number, which is just wasteful).
Yeah, I agree it has some issues. Personally was fine verifying keys tho - either in-person or wherever I met them (usually IRC).
And yeah, the insistence on mobile in Signal bugs me a lot - a desktop is A LOT easier to make private (Linux runs on damn everything) while most phones won’t allow making them not spy due to locked bootloader.