I find guys who wear v-tuber merch cute. It's not enough to make me become a slut or some whore, so don't go thinking wearing merch will get you women ready to fuck in an hour, but I do find it a cute quality to men.
Don't be ashamed of wanting to own merch or whatever else. Unless you're a little bitch who is schizophrenic. I guess it's somewhat of an unknown, some real crazies could be wearing merch. Worth the risk I guess, for those cute guys.