Seinfeld wasn’t that influential. Not on the Hill Street level. Almost every hour drama on TV now is serialized, even half hour sitcoms lean towards serialization now. Non-soap opera style serialization in prime time started will Hill Street, the entire prime time line up of every network doing scripted shows is influenced by Hill Street.
Not jesting at all, AITF was episodic not serialized. Cast changes and short arcs do not make for serialized story telling. If 99% of the episodes leave the characters in the same situation they started it’s episodic.