People about Cosplay...
To answer your main questions, No and No. Cosplay is supposed to be about inclusiveness, fun, and showing your love for a character.
That being said, as with any group of people, there will be jerks on both sides. There will be those that make their costumes and look down on those that buy them, and vice versa. Jerks can be found at all levels of cosplay, just like regular society. And just like regular society, you have the choice to ignore the jerks and go your own way.
If you are happy with your cosplay, not competing in a 100% bought cosplay and are having fun, that really is all that matters.
People who make their cosplays receive just as many nasty comments and critiques as those that buy them by the way.
I was always fascinated with cosplay and always wondered the reasoning behind it. Then last year I decided to try it out myself and see what I would think about it. I was completely surprised by the amount of anticipation I had for one making my own costume and two showing it off.
I think I’m officially hooked on cosplaying because it’s just so much fun to do! The whole process of picking who you are going to be, planning out the costume and then wearing it is exciting! It kind of takes you out of your life and you transform into this other person for that day.
Another fun thing is that many other people enjoy your cosplay. This is usually their opportunity to see their characters in real life, I can’t say how many drive by hugs I have gotten and many refer to your characters name (which always catches me off guard). For that day you receive a lot of love from others and I think that’s usually what makes people want to do it again (at least for me), life has too many unhappy things so being able to create this happiness not only for yourself, but for others as well is a good feeling.
When judging whether something is cultural appropriation, ask first: is there a cultural double standard that praises the borrower while punishing those whose behaviors/styles are being borrowed from? If not, then the second test is to see if the thing being borrowed has religious/spiritual/historical significance the borrowers are disregarding or disrespecting for the sake of ‘cool’. Finally, does the act of borrowing reinforce stereotypes?
To answer your question, No. Cosplaying in the past hasn’t been used to marginalize, dehumanize, or stereotype the Japanese people. Cosplay has no major religious, political, or spiritual significance, even in Japan it is considered a commercial hobby. Cultural Appropriation is problematic because the hegemonic group (in the US case, white people) get praise for behaviors the group that they borrowed the practice from get penalized for (in this case, Japanese otaku). However, Japanese otaku have the same or superior status as American Cosplayers at US Conventions and English language internet. Japanese Otaku are not facing a double standard when compared to white otaku that favors White otaku.
There are some racists who may say white cosplayers look more like the anime/video game characters then Japanese cosplayer, but those types tend to be seen as racists and pariahs in most well-balanced cosplay communities. Most people tend to think the Japanese have very high quality cosplay.