Is it uncommon to use other patterns within rails like service objects? I like using Draper, Pundit, and other gems which provide decorator and policy objects.

I prefer to not use Helpers and AR callbacks (generally Concerns too) as I don’t think they encourage good OO even though they are officially part of rails.

Ultimately it comes down to what your goal is. Is it to deliver some business value fast to end users? Build a new product with a small team? Then I think rails is a great tool to achieve that.