For the most part that's going to be other people's property, so it doesn't really sound like our problem.But it's also something we could seldomly use. Never mind the issue with attracting attention, it would just plain not fit in 90+% of the places we're likely to see combat.
More seriously, Shintai form is supposed to be used sparingly. It has a whole mechanic to ensure that it becomes more difficult to use the more often we invoke it across an arc.