I would bet that you would need about the same amount of time nomatter what technology you used. The catch is this sentence:

> I literally just spent about a month hacking on flask-security to get the login/email-confirmations/email templates/argon2-hashing/2-factor-auth the way I need it.

I don't know Anvil but I am sure it has a specific way of dealing with login/signup/... - just like every other framework. And if you want to modify it, well, that takes time. And I am guessing it was the same with other tasks.

There is nothing wrong with that, of course. Just saying. :)