I know once there was a time when some Coinbase listed coins which were too few considered as Alpha coins but from a long time in my views from 3 to 4 years there are many coins on Coinbase that are super shity and dead as well.

Anyway I had a Coinbase account long time ago but due to their regulatory changes they removed my account and noticed me to withdraw funds, from that timeline even before that timeline I got Binance as my first choice haha in that coinbase era I use to list coinbase above Binance due some decent features which I don't even remember now.

Anyway, such regulatory changes impact userbase.