Thankfully I don't have to rely on subtitles since the source is already in my native language anyway, so I don't even know how the subbing community is like.
But I do agree that episodes are generally repetitive, but then again they're taking the entire game's story (which can easily be beaten in just 1 day of autistic playing) with their own twist, and span it out over 3 or 4 years (2 years for gen 1, but this is simply because the anime came out 2 years after the release of Red and Green, and Pocket Monsters 2 was already in the pipeline, which also explains why they teased a gen 2 Pokemon in the very first episode).
So of course you'll end up with 20 or so filler episodes inbetween episodes that actually matter (and the record goes to Diamond & Pearl where it took them an entire year between the 7th and 8th gyms).