Honestly I was a bit iffy about Palpatine being a clone, but in retrospect having Kylo see clones of Palpatine would be the clearest way to explain to the audience how he is back. Seeing clones of Palpatine would serve a greater purpose for the story TROS than seeing clones of Snoke, who plays no role in this film. Seeing clones of Snoke doesn’t make it any clearer as to who he was, or who the original Snoke was, if there even was one. You could even keep Palpatine’s dialogue regarding him if you wanted to keep that connection.

I’m not really saying clone Palpatine is a better idea than Frankenstein Palpatine, but we don’t see or get a clear explanation in the film that Sith Cultists recovered Palpatine’s body from the wreckage of the Death Star, and put it back together again like some demonic Humpty Dumpty. At least with the pickled Palpatines idea, the movie would actually show us how he survived, rather than just leaving us with “dark science, cloning, secrets only the Sith knew”.

But I do agree with Ash that there has to be a more effective way to show that Palpatine is definitively dead. I really think the Force ghosts need to manifest in some way, and basically use Rey as a conduit to destroy Palpatine’s malevolent spirit once and for all. I think ways to actually portray this would be really worth brainstorming.