Step back a few paces from the ideologies themselves for a moment.
The fastidiousness of those who pursue science (and the devotion of the fans of science) and the fastidiousness and devotion of those who pursue their religions is equatable.
That is what makes them religions. Again, I am using the broader definition of Religion. The surprise that I even dare compare the two just proves my point further. A more dispassionate/objective person would try to understand what I’m trying to say. The passion for the ideology.