PayPal and Venmo are still letting SIM swappers hijack accounts 6 years ago
The problem with using a VOIP number is that most app and websites won't let you use anything but a regular carrier number for verification -- they specifically restrict VOIP numbers from use. I presume this is to prevent spammers or just regular users from creating multiple accounts, but I think they're mistaken as it's trivial to buy a temporary "real" carrier number on the internet if you're fine using a somewhat-shady site.