Completely different thing. The gist of the Boeing theory is that it was ruined by a finance-driven culture that resulted in cost-cutting away quality and safety.

"Enshittification" is not based on cost-cutting or optimizing for profits. It's when a product that's already "perfect" and widely used, has lots of money/effort invested in it to chase further growth, and the changes end up making the product worse for its existing userbase.