I fall into the younger demographic, and in thinking about it… I can see where some youth could fall into the trap of being “rigid”. I am one of them who has “grown” in my faith, and become less “rigid” and more “open” to the holy spirit, while still adhering to the truth of the faith.
Where I was rigid was with music. Organ or bust. Chant or bust. I would get angry about certain instruments being used. While there is still some truth to what the organ provides to Mass, you can make beautiful music with numerous instruments. I have been to guitar type Masses before that are very subdued and not in your face entertainment. When it becomes a performance in any case, it is overbearing and overtakes the intent of the Mass, the Eucharist and the word. However, I have had to grow by opening myself to experience and research more.
I can see some being rigid in judging others… in the Latin Mass, I can see some judge a person for not having a veil on (my wife is one of the few who wears a veil to our Ordinary Form Mass, and I am sure some judge her for that). Some could question the reason why a person does that, which is what we all should do as Christians, but not judge without knowing the background. I also know some youth who are on the verge of not accepting the Ordinary Form as legitimate, or as a foul of Vatican II. I love the Extraordinary form, but I equally love a reverent Ordinary form Mass, too.
Maybe judge is a better word than rigidity, or in this case, they can go hand in hand… meaning that we are sometimes stuck in our own worlds that we cannot adapt to different practices in the faith that are totally legitimate and are part of the true faith. There are some crazy things that happen in some Masses that aren’t acceptable in practice, but I am not talking about those things here. And many who are in high school/college may put off this certain “I know what is right” thing… I know because I was at that point around that time.
I do believe you can be open minded about the faith and learning more (as we should), and still stay true to it as well.