Good question.
But the answer is very simple.
If a Gadol/Gedolim would mattir using a smartphone or cooking food on Shabbos there would also be similar backlash, and not just from Rabbonim.
OK. So we clarified that you're protesting the heter, not the nevuluh being done. The heter is based on a concept that everyone agrees exists. The question is whether or not it applies in this specific case. Additionally, this is an area where everything is judged on a case by case matter. Therefore, I don't see how this compares to the shabbos switch, for example, in regards to being pertinent to anybody, which would justify their discussing it. Unless our gedolim have issued a statement telling people they are obligated to mocheh the mattirim, I don't see how anyone feels they have the right to do so.
If you'll notice, all the kol koreis (that I've seen) carefully avoid condemning the mattirim or calling their yiras shamayim and yedias hatorah into question. Obviously, the gedolim writing them weren't as qualified as the erstwhile posters on this thread to make such a statement.
No kidding, dude.
But you can't rewrite history, because there was a heter here.
I was responding to his claim that people felt obligated to be mocheh the aveirah being done. I was just pointing out that if the aveirah would've been done without any pretenses, nobody besides for those involved or in the capacity to have a positive impact would've said a word.