I am on the side that has felt that I've liked Nino overtime, but in the sense of "disliking her less." As with many detractors, I despised her with her introduction, continued to dislike her with her big story arc because of how continually self-centered she was, but will admit that she's been presented a bit more consistent (which I can appreciate) although all her chapters place too much emphasis on her relation with Fuutarou and does nothing to improve who she is on her own.
imo, if you converted because of these Nino chapters, you were no dedicated fan to who you named yourself to be before.