Again, MO is a philosophy. The same way Chassidus is a philosophy. Oomis is 100% MO [I’m assuming Oomis believes in the Torah UMada philosophy].
I know yeshivish people who don’t daven everyday and MO people who learn constantly. I know Chassidish people who violate halacha and MO people who would never dare. [And vice versa to all those]
Someone who calls themselves MO and watches TV on shabbos is just breaking halacha. They are not doing so because they are MO, they are doing so because they are breaking halacha. They may be using it as an excuse. That’s it. I’ve never heard of a MO Rabbi who says its ok to watch TV (or go mixed swimming in a bathing suit or other things).
Each community has unique problems.