Before France got Arab money we were the consensus 5th best league in the world. Consistently did well in the CL and Europa league with multiple finals semi finals and quarters in the CL. Add to the fact this is a defensive league every team sits back and make it hard to break them down. Usually very bleak scores of 1-0, 2-1 etc. The Dutch league constantly has 5-5, 4-3 sort of games (no disrespect) so that’s why when Depay was coming through there were questions about his inflated numbers.
Look at most top teams and you will see some one from the Portuguese league there. Madrid,United,City,Barca, Juve,atlético, Bayern etc.