No, singular causation is not universally "labor". That is perhaps the laziest attempt at attribution I've seen in this forum - and we ALL know THAT is saying something...The invasion was telegraphed for months. Fuel prices went up when the market believed an invasion was imminent.
Markets are forward looking. Political pundits are always backwards. Seriously they have a big problem with pretending historical data is predictive. But I digress.
The inadequate infrastructure is a function of lack of labor.
The constraint on supply to meet that pent up demand is labor.
The labor shortage is the root of the inflation problem.
Labor is a factor. One factor. But, I get it. Your ambition is to be forum gadfly and saddle burr. Enjoy - I have work to do.