allow me to add my two cents to this thread.
There is no more ‘freiliche’ kabbolos shabbos than a “carlebach kabbolos shabbos’ .Everyone gets up and dances and it is the most wonderful experience. The davening is long BECAUSE people love it so much. I can see why it might be difficult to daven every shabbos in the full nusach but to do this from time to time is the most uplifting experience. if you want to have your heart sing, go a Yehuda green concert when he sings R’shlomo’s niggunim. if you don’t ,then your neshomo has a problem. remember, the “shaar haneginah” is right next to the “shaar hakovod”.
As far as r’moshe’s teshuvah: first of all, R’shlomo’s name ws never mentioned. I actually know who asked this question and it was clear that there was absolutely no problem singing his niggunim. so, please , if you don’t like his nuggunim or him, you are entitled to your opinion but it is no coincidence that tens of thousands of people sing his niggunim today and celebrate Kabbolos Sahbbos with his nussach .( sorry, cantoresq)