I think they're great as long as you buy one with the right expectations like you did

My wife loves her Moto phones that I can pick up new directly from Moto for $150-$200 on clearance. She's not concerned about security or os updates (which are overrated and Moto phones don't get many of), has never had any issues with the phones or security (she's careful), and the phones look and feel way more expensive because I get them for typically less than half price
So yes I think smart purchases of budget phones can be a great way to go
