Yes, but there may be a benefit to launch a part of the Human world outside of the biosphere, e.g. the most polluting industries.
It is worth thinking whether it is a good thing or not that a very risky industry (for which an accident could be really disastrous) can take place on the Moon.
We can also launch a bare minimum, and then let automated builder robots unroll the industry from local resources (e.g. lunar silicates, other metals,...).
This can be how huge photovoltaic grids could be built on the Moon, for example.
Of course we cannot rely on that, because photovoltaic facilities built by builder robots would take too much time to be of any relevance for the current crisis.
If it is launched now we may be able to use it a few decades later.
You are reasoning like if not 100% of engineers but "only" 99.999% work on the priority projects then those priority projects will fail. That's not the case.
Moreover, there is always the need to continue to explore and diversify research and development. It allows to spread the risks (even if modestly, given that most resources go to the priority projects) and discover the necessary paths to go ahead (which is required even for the critical paths for the priority projects).