What is so bad about a sombrero or mustache?
I’d rather see someone go all out and dress like a person in a mariachi band, or a pancho villa outfit.
I don’t see it as negative. Plus it gives people a chance to practice overdone accents. Beats seeing people in satanic outfits.
Can do this for all sorts of cultures other than mexican too. German lederhosen + accent, etc..
How about vinylhosen?