I mean, if you're looking for an actual or logical reason, there isn't one because the flip outs over talking to a guy are irrational from the get go.
If you want a realistic explanation, the likes of Calli and Bae do so without (much) conflict because they set that expectation immediately before the unicorns took root. Calli took an interest with and worked with the stars early and also with the trash taste lads. Bae came right out the gate proclaiming Roberu her oshi and talking with the stars.
Some segments of the unicorn spergery still exists in their fanbases but because they interacted early and expressed interest, very few are shocked or appalled now.
Basically if you don't leave room for your fans to delude themselves, you end up with fewer delusional fans. (the truly exceptional will always rise to the top though)
the first part isn't really true she has her gremlin side even off stream and even before debut going by what Gura says. Her fans seem to expect it of her 24/7 which she's not like that but that side of herself isn't by any means forced, it was even there in her past life persona.
The rest, I just don't know what you're trying to say, what does "she doesn't have a prejudice personality" even mean.