I have noticed AirTable but I've never tried it. Maybe it's good but on the spectrum of customization AirTable seems closer to Excel or Google Sheets than Access or something custom-made.
Another important aspect is data protection. For my last "just CRUD" project I had to implement at-rest encryption where PII is only accessible with the user's password[1]. Something like that would be possible in JavaScript in an ugliest.app but if I'm not mistaken not in AirTable. Most businesses would probably be fine with it but I'm always a bit uncomfortable entrusting someone else with any unencrypted customer data, especially PII. (But I'm not saying AirTable doesn't do its job protecting customer data.)
Another important aspect is data protection. For my last "just CRUD" project I had to implement at-rest encryption where PII is only accessible with the user's password[1]. Something like that would be possible in JavaScript in an ugliest.app but if I'm not mistaken not in AirTable. Most businesses would probably be fine with it but I'm always a bit uncomfortable entrusting someone else with any unencrypted customer data, especially PII. (But I'm not saying AirTable doesn't do its job protecting customer data.)
[1] It just so happens that this was part of my undergrad thesis project so you can read up on the encryption scheme: https://github.com/T0astBread/thesis/releases/latest/downloa... (section 4.4.2 "Personally Identifiable Information").