Maybe mom should go fluff her eyelashes more and come to her senses and tell her son to be charitable and donate his time to good causes without destroying his love he so clearly has for this young lady.
His Mom might not be an enormous fan of this mission either. When asked in a recent video by Boston how she felt about it, she paused and said "It is what it is" and seemed to perhaps be biting her tongue on saying anything stronger. Of course, what Mom wouldn't miss their offspring for two years?
I don't disagree with what you wrote, but it's important to recognize Brock is an adult and can make his own decisions about what he wants to do in his life. Granted, it's ingrained in Mormon culture that a mission is valued, a sign of status, expected, honorable, etc. Yet Boston is not doing one - and neither did their Father.
I don't get the sense Brock is the most introspective or laying-awake-at-night soul-searching person, just kind of "goes with the flow" in the moment (we'll leave all the worrying and nerves to Boston - he has enough for the both of them!). But even he may realize he needs some structure and meaning and purpose - beyond, of course, constant Swig drive-thru trips and collecting said Swig cups, having a modest sneaker collection and doing whatever in-the-moment antics for their channel. Given that he was raised in that religion, a logical search for structure/meaning/purpose in his mind might be a mission. Some people read a pile of self-help books, some people travel to Europe for a year between schools, some people date unpredictable artistic souls, and some people lean into their religion.
I sure wouldn't have fun in sparse accommodations walking around all day preaching religion and getting doors slammed in my face or someone patiently listening just to humor me, but maybe that will give him some structure/purpose and he'll see a larger world and population beyond his pretty small, upper-middle-class orbit?