Remember when a regular TV season was 13-15 episodes? TV shows were 24-27 minutes long and started on the hour. They've managed to squeeze less content into the same space. Same for radio.
I don't begrudge AMC since they don't have the same budget as the big three and aren't producing half a dozen separate shows with the same basic plot (NCIS, et al).
On the traditional networks (ABC, CBS, NBC & FOX), they usually did 22 episodes per season. Half-hour shows without commercials ran 22 minutes, hour long ones were 40-45 minutes.
Thanks to HBO & cable networks, seasons may be shorter but thankfully far less edited. Good for profanity & occasional and usually tasteful nudity.