Dear Avira,
Yes! A big shift from the YV to MO is that people are not asked to fake their Judaism. Nobody in MO is tznius because ‘what will the neighbors think’? BUt in the YV when the neighbors are away……
You can’t say people are more frum because they don’t do things openly that they can’t get away with. The YV may be a more correct way of having a frum community. But it doesn’t automatically make the people more frum.