I mean let's look at the Kaoh Rong cast... it had its non-entities...
Don't get me wrong plenty of these are likable but the same opinion can be formed like they are with the MvGx castaways.
Darnell (Rachel had more of an impact as a first boot)
Joe (completely irrelevant on so many episodes)
Jennifer (I forget what I liked about her but her edit doesn't really surpass a MvGX early boot such as Lucy, who had more of an impact in an episode at least ... could maybe compare to someone like Jessica even)
Anna (as much as I liked her she fizzled out quickly and she was one-dimensional... similar to like Michelle from MvGx.. who I also liked though

)
Neal was a much worse / more boring version of Zeke as far as I'm concerned. Pretty damn bland.
Nick was a one-tone, annoying, full of himself character.
Scot & Jason served as decent villains for the season I'll give them that, but they're another pair of pretty unlikable castaways. (I guess Scot at least had a few different aspects to his personality as we saw with his relationship with Tai and what not but whatever at these two)
Aubry wasn't far off from the typical "nerdy" game player (likable enough though). The thing is, I would say Hannah is the WAY better version of this kind of character and actually had plenty of different dimensions to her character. Much funnier too obviously as Aubry didn't have much of a sense of humor.
Maybe some others as well. But that's half the cast already. I think you could pick apart plenty of people from the Kaoh Rong cast just like in the MvGx cast.