> eh, it conveys all the advantages of a roth IRA

it does not.

https://www.physicianonfire.com/value-of-backdoor-roth/

> believe possibly) stronger bankruptcy protections

true, but at the significant cost of losing the ability to do tax loss harvesting on the (presumably) large amount you are investing through the back door. plus the withdrawals are taxed (regular Roth are bit but backdoor is).