I don't think cost can be levied by anyone as a genuine reason not to use wets. Most bikes have plenty of money spent on them, some lots, and many seem to have spare wheels. Do you have to have warmers?
Think it's only a discussion based on 2 things
Safety
Spirit of DD
Safety only seems an issue when as described by Ghost, and spirit of DD is cheap controlled racing which 1 control tyre suits
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