I'm actually a Christian (OH NO!) and thought this was funny. But then again the pictures you edited were mostly catholic and I've always thought the catholic faith was a bit on the religious side.
Just, WTF?
Christians (Protestants) differentiate themselves from Catholics. Thank Martin Luther for that. Protestant Reformation. Back to the nitty gritty. No more worshipping Mary, praying to Saints, donating cash to the Pope so you can get into heaven. Now its all about confessing sins to God instead of a man in a booth, praying to God through Jesus instead of to God through a priest, etc etc ... All that standing, sitting, standing, sitting, ... latin services nobody could understand, etc ... = "Religious". Therefore a Christian saying Catholics seem really religious is basically a fellow who got back to the true roots of Jesus message, looking at an institution (Catholicism) which is still very bogged down in ritual and meaningless, manmade elements. "Religiousness". As opposed to a "Relationship" with god ...
Clear as mud? Protestant 101 dismissed!
Yep, you are 100% right. I grow up as a Protestant and we don't pray to Mary or put thousands of dollars into our churches. That's just stupid.