Avira> point is that halacha allows and encourages taking tzedaka to learn. I showed you that in plain words of shulchan aruch and rema
I am looking back, I don’t see how Avira transfers allowing accepting of support for a Rav and for a sick person to an average kollel member. Also, not clear from that quote – is it accepting tzedokah, or accepting support in the form of salary for a Rav in lieu of time he is not working. And accepting tzedoka from non-Jews. First, you seem to be stretching the ruling too far, and second you are not acknowledging your stretching.
and, at the end, there is also a question what is wrong with following S’A l’hathila approach for healthy people – work a little and learn the rest? This is a problem similar to what Chabad has – not only the approach is questionable, but the insistence that other approaches are invalid. It may be a problem inherent to all modern mass movements – you need to convince and motivate the followers and the easiest way is to call everyone else hazerim. Ain’t emes though, so you won’t get Hashem’s haskomah.