I don't have the feeling that people don't like coinbase. But depends on experience they have. Some of them had problems with customer support or bad experience with freezing accounts which could be very annoying.
Freezing accounts is really bad idea for those who don't read the rules and the policy of coinbase sometimes people are too lazy to read the rules and the policy of the website and then if they disaallowed rules ofcourse support will be to do something like that and you are going to complain and then knowing that there are some rules that you violated.