Probably. But I don't think that is very problematic. Browsers have become a lot more standardized. What also helps a lot is that windows is now Chromium edge

Probably. But I don't think that is very problematic. Browsers have become a lot more standardized. What also helps a lot is that windows is now Chromium edge instead of IE or old edge. Testing tools have also come a long way. It's the same as building web-apps.