Solution: Expert level crossplay. Shave, do your hair and makeup, wear a wig. A cover thingy for what's between your legs. So on and so forth. That'd require a lot of time, money, and effort to work, though, and your friend group may be weirded out.
I think I do remember you saying you had a Honoka figure...
... and you reminded me that I do, in fact, possibly have 4 full size Nicos myself. Snow Halation, Picnic ver, and an SH figuarts version I have for sure. OH! And a first fanbook version. SO I DO HAVE 4. Or was it 5? I dunno. I'm not good at tracking these! Plus a couple petite nendos as part of a pair of petite nendo sets for Love Live.
Well, they either ordered less and underestimated how many men's cardigans would sell, or they ordered the same amount of each and the men's cardigans sold out faster (not necessarily just because of men ordering the men's cardigan - it could have been ordered by women who like the style better or liked the fit better).
No matter what the reason, it's not surprising to me at all.