>If a number becomes untrusted after a SIM swap, you may be better off getting a new number.
Do you only use your phone number for 2fa? People don't call you or send texts? Keeping the same phone number is still convenient so people can still reach you at the same number.
I can imagine the convenience for most people. For me, not being a big phone user, it's not difficult. I did it recently when porting to a new provider failed to work (despite only needing my phone number and date of birth as input). Perhaps a few organisations didn't get the new number and can no longer contact me for marketing etc., but that's a bonus.
Do you only use your phone number for 2fa? People don't call you or send texts? Keeping the same phone number is still convenient so people can still reach you at the same number.