As I said before, I was on the fence with this whole thing. RSIs are scary, and we don't have professional trainers telling us proper mashing techniques, proper stretches etc...

But when I realized the work being put in to find Turbo-exclusive strats, I think I fell on the "against" side. Not sure if you've heard of it, but from the (very) little I've gathered, you could get multiple guaranteed freebies if you just held a Turbo input at a specific moment during KG&GG. Now I understand that removing RNG for execution is usually good, but it still feels strange to me. (Also, frame perfect execution on SNES may as well be random anyway, albeit entirely different than regular randomness).

"Allowing turbo to mash text but not look into other Turbo strats is arbitrary".

Fair. Although I don't understand the pseudo-scientific hatred against anything that is arbitrary in the community. I swear there is an Invisible Hand at work, and the majority of speedrunners will bend to it regardless of what would be enjoyable (Example: LTTP almost lost the NMG category a few years back, but thankfully their community was strong-willed and kept the category around, even if it was arbitrary and the backlash was unending). Scientific rigor is needed to keep competition on equal footing. That's it. It is not and should not be an absolute in the context of speedrunning. 

I digress a bit, but I'm saying this because I think your most solid point is how arbitrary it is to decide that text mashing inputs are less important than the rest. It doesn't work on me as an argument (as explained in the previous paragraph), but it certainly is a very very solid point in the context. I.E. yes it is arbitrary to remove this rule from the J community and keep the rest, and it is arbitrary to not look into more Turbo-exlusive strats... but it certainly is just as arbitrary to value certain inputs contained in the run as lesser, to a point where you remove them entirely...

Still though, RSIs are scary. But that weird taste in my mouth won't leave me, no matter how much I brush...