Absolutely. My friends and I just flew with Ryanair from Rome to Barcelona, and besides almost losing my mobile boarding pass because I almost lost my phone, it was completely fine. I've heard a lot of things about them strictly enforcing luggage sizes, so I just made sure I only bought the tickets through the official website while ignoring the upselling dark patterns and got bags I knew would absolutely fit the stricter luggage requirements.
Given the alternatives were either Wizz, Lufthansa, or Easyjet for a direct flight, I think I made the right decision.
Oh my god finally found exactly the kinda thing I wanted with even more than I bargained for.
Yeah UI could use a tiny bit of polishing but it's still very fluid, damn.