Trails are art. Personal interpretations. i dont care if if is some janky shite built by teen agers or some massive built flowy road. Its all built with passion. destroying any ones labor of love is disrespectful of some ones only intention which is to bring joy to the sport.
There is no accepted time to rip apart some ones work. Built out of passion.
Good and bad trail building are opinions and nothing more. The thousands of people in BC who build and maintain trails, with or with out consent are my heros.
Any one who destroys some ones work because it does not fit your personal opinion . I have no respect for such people.