I understand the part about, if you aren’t familiar with it or not proffient enough to hold a more casual type conversation, it’s not worth it.
I do feel like the iew can’t be applied to everyone. I, personally come from a family full of 2 Romace languages as is (Spanish and Italian, common in Argentina) and I liked the language enough to take it as a child, though my mother’s Classical Language background helped. I’m still helpless with any Greek, Hellenic, Homeric, niente! But Latin comes to me as easily as Spanish and Italian do =\ I still reserve that for when I can focus more since here at home I speak English with my sister and with my parents it’s mixed.
Only issue I had was that Ikept switching between classic pronunciation and Ecclesiastic (though it may sound bad for all the Latin scholars out ther, Iam at ease more with Ecclesiastic singe it’ uses Italian phonemes.)
And as for not going in other lagnguages? I have gone. I would rather be able to attend th Sacrament even in KOREAN (at the more modern Parish my parents go to, they have one sorry, no offense meant) but I believe almost all here are familiar with the structure of Mass and in the end if you can follow and pray inside in your mother tongue, it’s better than not going at all, that’l. Just my opinion.