There are one or two old captains that frown on cadets but I think you will find they are frowned on themselves by the greater pilot body. Some cadets are now captains and are well respected.
Without command time you will indeed have to wait a while for a command as you build your ICUS hours. That's not a bad thing. In times past a Fo would wait around 5 years even if they had 5000 hrs due to not much movement in the ranks.
The industry can change drastically from year to year so forget worrying about commands and concentrate on being a good FO. A good FO is a very valuable resource in the busy regional environment. Be the best FO you can be and the command will come regardless.