Lawyer here — very few of us know more Latin than the odd artifact such as ejusdem generis or contra proferentem, which occasionally are relevant to contract interpretation. And those of us of a certain age who grew up Catholic will remember bits and pieces of the old Latin Mass. Otherwise, Latin is probably as dead to lawyers as to anyone else.

English is now the global lingua franca; while I used to be a grammar vigilante, not long ago it occurred to me that in the linguistic "marketplace," if we native speakers want English to outcompete, e.g., Mandarin or Spanish, we need to be willing to let the language evolve so that it's easier for non-native speakers to learn and use confidently.