Question 1) There is a sect X in India, which is more of sankhya/yogic practices sect. This sect revers only vedas and patanjali yoga sutras as revered texts, but it does not hold it(esp. vedas) as canonical text. It treats them more as respectable texts. And hence, it holds that there are many parts of vedas which are problematic/unncessary , so it leaves them out.
So now my question is that, as vedas are not canonical texts in this Sect, so can we consider them a fully valid hindu/sanatani sect or not?
Question 2) There is a sect Y in India; which holds "only one particular upanishada as canonical", and it does not consider rest of vedas or gita etc even in its discussion. So can it be considered a fully valid hindu/sanatani sect or not?