I think it's only a problem if people get hurt and we don't have anything to show for it. If we're blowing up rockets but we're also making significant and steady technological and scientific progress and also have plenty of successful missions, then 'blowing up rockets' just becomes part of people's expectation.
"Yeah, their last rocket blew up on the test stand, but the new one flew just fine and got us some mighty fine data on stratospheric weather. It's a very young field, these things are to be expected."