hentropy said:
That's not to say it's ubiquitous, many people who work around the area enjoy it because of all the extra business, others enjoy the celebratory atmosphere. I'd even go to say that the majority of people have no problem with it, but the "normie stare" is a thing and it can put a damper on the experience if you venture too far away from the convention hall. You can also imagine what it's like crossplaying.
That just reinforces the 'time and place' idea. If you're in a convention, or a section of a town like San Diego which is used to those sorts of things, then go for it. But people have the right to be weirded out and uncomfortable when someone walks up in a wizard's robe and hat, or a handful of leather strips, or a neon green maid outfit. It's not standard wear in our society at large, and if you choose to deviate from that then you can expect to be viewed as outside the norm. I wouldn't wear my business suit to a goth bar, or PVC pants to my job at the university, because that's outside the norm for those situations and it demonstrates either being tone deaf to cultural norms, or being deliberately provocative. If Liana dresses as Ivy for an anime convention, I'm all for it, but expecting the PC Party delegates to appreciate that context or support her wearing that getup outside of that context is too far. You get the 'normie stare' because you're deliberately not acting normal, and people react to that.
I think there's a reason, in the related video, that you found people dressed as witches and wizards in Salem, and not people dressed as Super Sentai or even Mario.