Those players were injured for many games, not just when we played them. Also- if you want to discount wins against injured teams then you should discount the three championships Golden State won in the last 4 years. In 2015, the Cavs didn’t have Love or Kyrie and Cavs still won 2 games. In 2017, Kawhi got hurt while the Spurs were blowing them out. They matched up very well with that team, beating Warriors by 30+ in Oakland during regular season. In 2018, they were down 2-3 in WCF and lucked into a Chris Paul injury. Even without Paul on the Rockets, the Warriors needed Houston to miss 27 straight threes in order to beat them.
So. The Warriors aren’t a dynasty at all. Just a lucky team that would have just one championship (in the 1970s) if their opponents had been healthy.