I've said this before, and I will likely say it again. I feel like every series with harem elements will eventually reach a point where the harem parts become so overwhelming that everything else fades into the background.
The only difference is how long it takes. Some get there astonishingly quickly, while others manage to keep their focus on other things for a while. But eventually it will get there. I cannot think of an exception to this.
The harem parts can still be well written, and interesting, but personally I have more than had my fill of it. Fully saturated. At most I might give a GL harem a chance.
The most annoying are the ones that don't really seem to be about that at all to begin with. And actually have a fun adventure, an interesting story going. Then all the parts I like fade away as the harem eclipses everything.