Those leagues are also acquiring talent right? The EPL doesn't dominate the CL and went 6 years without a win and 5 years without a finalist. In fact since 2012 Spain had 7 CL finalists, England 3, Germany 2 and Italy 2. Also Ajax and Paris FC would wipe the floor with most MLS teams.
Again I don't ever expect MLS to be spoken about in the same sentence as the Bundesliga, Lique 2, La Liga, EPL, etc., but I am sure US fans would love to see a bit more of the homegrown talent than they're used to seeing if it doesn't come at the expense of development for the NT.