I agree! I feel like many of those 1-1 draws with 5-2-3 becomes a 2-1 victory with 4-5-1. On the other hand, I feel like 5-2-3 are less prone to random goals against them, so plenty of 0-0 draws are turned into a 0-1 loss. I think 5-2-3 is a necessary evil in this game, there needs to be other effective formations other than just 4-5-1 imo.
I think both formations has a purpose, though. Personally I think 5-2-3 is well-suited for a crazy competitive league where no team can win by a landslide, whereas 4-5-1 is much better in a league with only a few competitive teams. If one team goes to win the majority of their games, you kind of have to do the same, and that's more difficult with 5-2-3 since you are less likely to get rewarded with random goals. However, in a league without any completely dominant teams, earning a draw can sometimes count for a win.