In the short term the answer is a clear “yes”, as it allows players to play nearly all Windows games on Linux without modifications, and game developers to ship their games on Linux without any extra costs.
In the long term it might have a bad effect on the market, as it further helps to cement Microsoft’s control over multimedia APIs, since game developers now have little incentive now to target anything other than DirectX…
In this case it’s a bit weird though, as the game lists Linux as supported platform, but obviously just ships the Windows build with Proton instead of having a native Linux build that uses open cross-platform APIs.