Yes, this is one of the more common alternative fact on what happened to Boeing. Going beyond the nonsensical take of the evil subsidized foreign company unfairly competing against the hardworking non-subsidized domestic aircraft builder, as various independent pundits have reported in the light of recent events, Boeing's woes are mostly self-inflicted, starting even before the infamous MD takeover.
But it's true that it is more flattering to paint yourself as the victim of unfair globalization as opposed to acknowledging that the ruthless search of short-term gains came at the cost of product quality and passengers lives.
The fact is there's no competition in the American commercial part 121 airline world. No competition makes you lazy and incompetent.
Boeing and airbus is what the (western) world has for big jets. It's a duopoly and has no signs of not being one. Boeing probably shouldn't be a public company either.
The rest of world's aircraft manufacturers are quasi majority state owned enterprises.