I think some Catholics think that God is most pleased and glorified when we EMOTE for Him.
Maybe for some, that is all we can do? Or at least what comes easiest to us?
These same Catholics probably have something solid they could do to become better Catholics -- some attachment or sin they could give up, or some way they could become more perfect. And they know it. But they're frustrated because they can't seem to get very far. So they take that anger/frustration at themselves, and direct it to some other Crusade of their own devising.
They choose to get all red-faced and "try to show God how much they love Him" by losing control over their emotions over some small issue (element of Liturgy, Church decor, particulars of a vocal prayer, etc.)
Their eyes go up in their head, and the hairs on the back of their neck stand up straight, as they lose themselves in "righteous indignation" and they make no effort to control it, as it's "holy anger". Having decided their anger is righteous, they allow themselves full vent to their anger.
While their arguments might have SOME small basis, they blow it all out of proportion, and basically find themselves over-compensating for their past (or present) sins in the only way they know how -- to lose themselves in emotion, for what they believe to be a good cause.
Actual knowledge and education -- when present at all -- is usually rudimentary at best.
Now some of these people have the humility to accept correction when an educated person enlightens them. Others do not.
This is one of the reasons a place like CathInfo IS GOING TO ALWAYS HAVE HEATED ARGUMENTS. This is the location for a good portion of said emoting.