It just tells us that people probably need to comply more, not that we shouldn't bother with certain interventions. Suggesting we shouldn't try mask mandates because not everyone complies is like suggesting you shouldn't have laws about piling bags of trash on your lawn because some people still pile trash on their lawn. The real problem is the people who feel that "take your trash to the dump" is an imposition and resent having to do something to help the community around them.
Yes, perhaps someone could develop a new kind of glue that will enable them to be stuck to children's faces so they can't be removed.
I don't think that getting the levels of compliance required is possible, absent civil liberty abuses which are worse than the disease we are trying to cure.
