Its a new arc, in a new place, and people keeps complaining that they dont know the new factions and characters that are appearing. Isnt it obvious? I mean, isnt this what happens when the MC goes to a new place? Complaining about what importance this would have on the overall story when they have just been introduced is plain stupid.
Then there are the people who just dont care about the new characters or whatever just because they arent the MC. This is just sad, no point in delving further into it.
Its not like those kind of complaints are new, but with all the "boom" going around with heavy-MC-focused-series-with-plain-to-non-existent-plot like japanese isekais, korean crawlers or chinese cultivation series, i have notice that the number of those complaints have increased a LOT.
Its like people is getting used to everything being simple and easy, pretty much like ordering fast food, and anything that requires a little use of the brain is viewed as a pain.