TLJ is not an "objectively bad movie". It's currently sitting at 91% on Rotten Tomatoes, which means that objectively speaking, 91% of people paid to watch movies for a living thought it was worth watching, compared to all the other movies that they have to sit through.

There are certainly plotting issues, like the entire detour to the gambling planet. But there aren't any major plot holes. (The hyperdrive kamikaze attack is brought up as a big one--but closer examination shows why it isn't a plot problem and why hyperdrive torpedoes aren't a thing in SW. The attack actually fails to destroy its target--it merely slices through it. It only succeeds in causing any sort of meaningful damage because the NR's ship is so massive, which rules it out as a weapon of general use.)

The originals are full of plot holes too, and I'd argue Return of the Jedi is still the worst of the non-prequel movies. But it gets a pass because everyone saw it in their youth.

The OT had plenty of plot problems[0,1]:

[0]https://www.quora.com/What-are-all-of-the-plot-holes-in-the-...

[1]https://uproxx.com/movies/what-was-lukes-plan-star-wars-retu...

Face it, none of the Star Wars movies are particularly well written.