There were less international games back then. In addition to this, the qualifying was more streamlined.
For example, qualification in Europe for the 1974 World Cup was made up of 9 groups - 5 groups of 4 and 4 groups of 3. Some teams only played 4 qualification games, the most anybody played was 6 games. In COMNEBOL, it was a similar format, now they play 17 games.
If you now add in more friendlies, nations league games etc and increased amount of teams for continental tournaments like the Euros. They’re playing way more games now, and more games against minnows in qualifying.
For example, of Cristiano Ronaldo’s 128 international goals (an incredible record btw). 11 of them have been against Luxembourg, 7 against Lithuania, 6 against Andorra, 5 against Armenia, 4 against Estonia and the Faroe Islands etc.
It’s not healthy the amount of disdain I have for the man 😂.