I love Jerry as a character because he's kind of stupid but he's also the most level headed one in the family. You can totally see where Morty gets his stupidity but common sense from.
Pretty much.
Rick's a monster
Beth's in dangerous amounts of denial about Rick's activities, which have gotten some of them killed at least once
Summer puts on the facade that she has life figured out and is constantly proven wrong by Rick or Morty every single time.
Morty's a living human-shield who's in way over his head and has no choice but to go along with Rick, committing various atrocities after mostly giving up and going straight into nihilism when he realized that his life was essentially pointless and worth very little in the scope of the multiverse after burying himself and going on like nothing happened
But Jerry's just a loser. He's not bright, he likes stupid things, is shitty at his job, and typically does a poor job of asserting himself to stand up for his family without outside help.
The difference between Jerry and the rest of the family is that Jerry's the only one who shows any degree of legitimately learning from his mistakes and using them to improve himself and his relationship with his family. Beth and Summer revert and Morty and Rick gave up.