Of course I don't think that! Anyone can be a cosplayer! Lenses are just an accessory and not everyone can own/wear it. Personally, I own many lenses but I can wear them for 4h at most, sometimes less because of my eye sensitivity. I never wear my lenses to conventions because I don't want to face the risk of getting my eyes damaged. Whoever told you that you're not a cosplayer if you don't wear lenses then keep that person out of your life. A cosplayer is anyone who has fun dressing up as a character, lenses or not, wig or not, costume or not, as long as you have fun then it's a cosplay and anyone can do it as they want. ♥