Rigidity is found everywhere, not just limited to one sect.
In aqeeda the main problem is they tend to insist that Allah swt is in a location (a creation) and they say Allah swt is everywhere in Knowledge only. If true then they have conceived of Knowledge and the Knower as being two seperate 'things'. Knower, Knowledge and Known are one. In Fiqh...because they reject the mathab methodology they approve of almost every law of Capitalism...riba, banking, finance etc. they have no Islamic halal alternative, they cannot even think of a alternative...in action they are secularists...the deen is reduced to ibadaat (Salah, Sawm, Haj, Zakaat etc.) only, and Zakaat is reduced to Sadaqa (no collections by the ruler), just every individual makes contributions themselves. Jizya is abandoned too, and there is no talk anywhere of it ever being implemented anywhere. The world of business and trade (the economy) is run by Capitalist rules...Islamic rules do not apply....they have indirectly destroyed the deen.