I found some of them extremely funny - particularly the whole bit going over Anakin’s approach to romance.
It’s often forgotten that the Plinkett reviews were somewhat novel at the time, being among the first “long-form” reviews with an hour or more runtime. They came out at a time when Youtube videos had a length limit (I think maybe 10 minutes max or something), and so they were initially released in 10-minute segments. At the time the Phantom Menace review was released, I remember the length of the review being commented on frequently. Of course, nowadays there are tons of extremely lengthy movie reviews on Youtube.
Also, there is a lot of “lost context” going on with these reviews. The reviews themselves formed something of a meta-joke, playing around with the idea of an obsessive sci-fi nerd that would make such long reviews about a science fiction franchise. The fact that the obsessive sci-fi nerd is also an insane serial killer is for the sake of an absurdist exaggeration of the stereotypical basement nerd. (The meta-joke is probably more evident with the Star Trek reviews than with Star Wars.)
However, this meta-joke is now somewhat obscure, and likely lost on a 2023 audience, because the “obsessive sci-fi nerd” stereotype has mostly disappeared. Formerly nerdy stuff is mostly mainstream now, and being extremely enthusiastic about Star Wars is generally not correlated with “weird obsessive basement-dwelling nerd” anymore. So the whole Silence of the Lambs/serial killer schtick has lost a lot of social context, and probably comes off as inexplicable to many viewers.