This raises the eternal question: where does it end?
Undoubtedly folks can - and will - make cases for why all instrumentation should be allowed. There will be excuses about it being "for the kids" and "about the experience", and yadda yadda. For the "survival of the activity".
To even acknowledge that there may in fact be a line, would be to admit all of the changes made over the years have possibly crossed it, and could, or should, be rolled back.
I don't know if pandora's box can be closed at this point. When the arguments delve fully into the ideological, and not the practical, anything goes. And get off my lawn!!