Back in the day when I was like 15 I was an avid watcher of Linkara, I don't remember exactly when he started doing the plot thing, but they used to be everyonce and a while at the very end just like catching Pyramid Head in a pokeball or whatever and it wasn't intrusive and horribly cringey, I jumped ship after the Lord Vyce thing started happening and I realized "this is fucking stupid"
Honestly he used to make fun of weird plots like that during two parters where he had a fake "previously on" segment where people started saying ridiculous shit as a parody.
My guess as to why he started to do the plot thing is he wanted to write spergy stories and figured "people are already watching this show so I'll stick it in here and no one will notice" at first they were short little segments but then he started dragging them on and on until the entire "review" was basically his own comic book in live action form