Boeing doesn’t think they need senior engineers anymore. They believe all they need is a lead engineer and level one and level two engineers working for them.
One of the concessions the engineering union made was that they no longer guaranteed retention ratings based on years of service for engineers.
After that concession at the next layoffs during Covid they laid off a lot of 20 years plus veteran engineers.
I believe the long-term plan was to replace them with engineers in Moscow and Ukraine. They were caught off guard having to close both of those design centers.
But it’s well known that Boeing doesn’t like their older engineers. Or at least they didn’t when they used to have some. So many have left or retired that they don’t have enough experienced people but they don’t only look at the salary.