People about cosplay...
Absolutely not! There are exceptions, but even seasoned cosplayers who enjoy the crafting side of things will often buy parts of their costume. There’s an entire segment of the community that does commission work who wouldn’t have any business at all without the parts of the community who find skipping to the dressing up stage to be most fulfilling.
So long as you are having a good time and participating ethically (not taking credit for a costume someone else made, for example), you are doing cosplay exactly right!
There are so many things, and most people have different reasons. Some people go to an anime convention and see the costumes, some just love a character so much they want to be them, some like performance, while others are more into the crafting.
The main reasons I started, and still, cosplay, are the crafting elements and being able to bring my favourite characters to life. There’s a huge challenge in planning how to bring some of these anime and video game characters into the real world.
One other thing that can be fun is the reactions of others. I get a lot of comments, mostly positive, on my costumes and people can tell how much work I put into my costumes. I’m not the best at the performance, but I got a lot of positive feedback this past weekend in the costume contest at a local con. It’s my creative outlet and I love that there are people who accept cosplay. I have got some negative comments, mostly from people who don’t approve of costumes, but the positive feedback and friends I have made through cosplay keep me going.
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.