Before I quit watching Rick and Morty, of the latter's parents, I consider Beth the worst before character development set in. Jerry had his problems, but I always found Beth the worst, because she was either the more toxic of the two (yet we're supposed to sympathize/see her in the complete right with her most of the time), or went way out there to please daddy and act like him. To the detriment of her own children. Yes, it is shown as unhealthy, but it really does not get properly called out on it, until midway and late in to Season 3. I will give the show credit for developing these two along with other characters in Season 4 & 5, but I had lost interests. I briefly returned to watch Season 5 of certain episodes for some loose ends, but that was it.
Also, I noticed that animated shows from 2010s sometimes had this weird habit of making mother characters were supposed to like or see as sympathetic are unlikeable and garbage characters.