It's crazy how Happy Days started the Jump the Shark.

Was Chachi (https://www.quora.com/What-s-an-example-of-a-character-who-overstayed-their-welcome-and-it-affected-the-television-show-s-quality/answer/Jon-Mixon-1)'s (Scott Baio) arrival (https://radiodiscussions.com/threads/reminder-cousin-oliver-killed-the-brady-bunch.559057/post-4967215) the "real" jump the shark (https://web.archive.org/web/20061031125301/http://www.jumptheshark.com/h/happydays.htm) moment for Happy Days (https://web.archive.org/web/20140331134134/http://forums.televisionwithoutpity.com/topic/3116785-happy-days-where-the-shark-was-first-jumped/?view=getnewpost)? Among other things, by the time that Chachi showed up (https://www.google.com/search?sca_esv=34fe19f69faab3a7&sca_upv=1&sxsrf=ADLYWILyjPgs72B55hIZwwwpSr3RURf8wg:1724215735602&q=Happy+Days+Chachi+site:www.reddit.com&spell=1&sa=X&ved=2ahUKEwik976TpIWIAxXu38kDHXevFq8QBSgAegQIChAB&biw=1600&bih=773&dpr=1) and started taking center stage, you could hardly remember (https://www.reddit.com/r/80s/comments/180mddm/comment/ka9515o/) that the show (https://tvtropes.org/pmwiki/pmwiki.php/YMMV/HappyDays) was supposed to take place in 1957 or so on. Before this, early episodes (https://forums.primetimer.com/topic/110078-happy-days-general-discussion/) were very careful to make the setting as authentic (https://www.reddit.com/r/television/comments/qmp36y/the_first_two_seasons_of_happy_days_are_really/) (time and place) as possible.