Nothing to do with Europe being able to send ~8 teams from 1966 to 1978 to 13 since Spain 82
Modern world cups Portugal missed without Ronaldo
90' 2 points behind Belgium and Czechoslovakia
94' 1 point behind switzerland
98' 1 point behind Ukraine
Having in mind that from the 3 world cups they've qualified since, they went to the 2nd round in 10' and 14' (Ronaldo peak years) Ronaldo basically equals 2/3 points more for his team in the qualifying round, that's all.
And we're ignoring other things, like that in 10' you wouldn't face Bosnia in the second round, we'd be talking about Yugoslavia in the old system, or that you wouldn't get some teams like Israel, or Azerbaijan in your group pre-1998. You'd rather test your luck against the USSR, Czechoslovakia, Yugoslavia and Easter/Western Germany before Israel, Moldova, Latvia, Estonia, Czech Republic, San Marino, Azerbaijan, Georgia or Armenia?
Not only Portugal as a country is much stronger now than in the 70's and 80's, they're fighting for more spots against weaker teams. That's the biggest difference between their absence in the 70's and their perennial status now
Has that guy outscored Ronaldo in the same tournaments?, because if he's a great dibbler plus putting that kind of numbers yeah, he would be the best player in the world