Sounds like you're describing the Catholic teachings as-they-really-are.   As Catholics, to miss even one mass is to incur mortal sin.   

Just yesterday I heard Radio Mother say to a caller that to attend a Baptist church is "to leave Christ."  Did she make that up?  Nope, it's clearly a part of official church teachings.

So before you diss the Mormons, be sure you know what Catholicism is and the many stone walls it has established.

True religion is always a surrender of the will, which means a surrender to the group.  This always involves sacrifice and standards.  True religion isn't "like, whatever."

As for the Mormons themselves, every one I've ever met has impressed me as sincere and well-integrated persons.

And as for my original point, by taking their religion seriously, the Mormons have a lot to teach Catholics about how to truly engage young people.