Short seasons are perfectly valid and have existed since before Netflix. I remember watching British TV shows in which a season consisted of six half-hour episodes, and feeling that more (and more interesting) things had happened in that time frame than a USA season of 24 one-hour episodes.

These days that’s even more of a plus. When someone recommends something to watch the first thing I check is how many seasons it’s up to, then the number of episodes, then the runtime. Shows with too many seasons of too many too long episodes are immediately ignored.