Read the freaking article - its clickbait worry thing over nothing.
Why?
5 players
5
Not 50
Not 15
5
5 is not a feeder league
And the kicker to kill your arguement
One of them was Luis Silva - he couldn't even find a starting place in DC or for SJE. Some feeder league.
Players move around - Liga MX is right next door to the USA and a lot of people in the US have ties to Mexico.
I'm surprised its only 5 to be honest as natural movement of washouts and others (yes Silva was an MLS washout so.....feeder league?) should be more then that.
So, just stop with this nonsense.