Is it a problem anymore with proton?

Or rather -- is testing the game on Linux via proton sufficient, or do you actually look for native Linux builds?

I'm honestly interested as a dev who recently released my game I worked on free time, and I decide to go the route of single Windows build + proton, since it makes the build and release process a little bit easier, since I have a custom CI/CD pipeline and adding a Linux support into it would take some time.

And as someone who has a Linux as a daily driver and game only on Linux, having the game run on it was important to me, but I honestly didn't see a reason why go with a native build and the additional trouble it would cause with testing - because now I can just test one windows build on my Linux desktop through proton, and be fairly sure that it runs OK on both.