I echo the statement that I’ve never had an uneventful flight on AA. I fly a lot and can confidently say other major airlines are more reliable but usually also more expensive.
Despite the website feeling dated now it used to be one of the only airlines where the website accurately reflected the backend system (even phone agents couldn’t touch your booking if you had it open on the site) and their lounges were solid too.
These days I agree they’re towards the bottom of the stack sadly… everyone else caught up and they stayed still.
I mostly fly Delta now almost entirely for the on-time performance.
I actually much prefer AA’s website to United’s. AA’s may seem dated but it’s fast and the UI predictable. United’s feels like it’s fighting me.