i dont think its wrong for a sport to be influenced by another a little bit.  grinds in every sport  copy skateboarding cause skateboarding started grinds,  but every sport has their own version of it.   when people see a rollerblade grind, and do the exact same thing on skis, thats not a ski trick, its a rollerblade trick for rollerblades, its not original AT ALL, and just looks like yourreally desperate to do something else but arent creative enough to think of something on your own, and pretty much every single one of them other than mabye a broken looks like complete shit.  really like doing some tweaked grab or crossing your skis on a rail etc. on a rail is just a joke.
we have boards, skiing is a board sport, use them!! stop pretending we dont.  if you want to do rollerblade grinds, honestly buy some snowblades,  it would work so much better on them.