Portuguese Primeira Liga is pretty far from a weak league.
Just so you know, it's in the top 5 major leagues of Europe.
People are so quick to draw conclusions without proper facts to back them up, it's getting .
While Porto & Benfica beef up their UEFA coefficient year in, year out, and Sporting has some resources it's hardly a strong league as a whole. Well Braga ain't complete minnows either (but don't have that much resources tbh), but generally rest of the lot are very poor financially and hence loads of Portuguese players that could play on those teams and home league top flight play all over Europe on leagues that might seem lot weaker on first sight.