Is this a d**k way to win a league?

Absolutely not. When players sign up for the league one of the very first things they should look it is the scoring system. Everyone automatically umes that the scoring system in every league is the same basic scoring system that everyone follows. Well guess what? If you snooze then you lose! It's not your fault other people in the league either ignored the scoring system or aren't bothering to adjust their rosters to accentuate the scoring system. You are will within the rules because, well, you're following the rules. Don't be shocked if after Week 1, the other teams start to notice the scoring, and return guys start flying off the FA list. So, once again, all you are doing is following the rules better than anyone else so why should you feel bad?