That attitude is quite prevalent on the games industry, hence anyone that would spend some time among AAA devs would learn that they don't care one second about stuff like portable 3D APIs and OSes, as people in forums like HN think they do.
What matters is making a cool game with whatever tech is available and ship.
Game engine programmer here. I came up on DOS and Windows, and for a long time that's what I was comfortable with, and everything else I presumed to be alien. Once I'd worked on things that were both cross-platform and low-level, the idea that different hardware platforms and OSes were different went out the window somewhat. It was literally enlightening. In the old days, we had to be mercenaries. SNES is popular now? Port the code to that. PC getting big? Port to that. Later on, it was more like you had to be on everything. The last proprietary engine I worked on would compile with large subsets of features intact on Windows, MacOS, PS2 through 4, XBOX 1 through One, iOS, and Android. Probably more than that! Someone in the company was always adding a new backend, and I was frequently surprised to learn we ran on something I didn't even know we ran on. To a user, these platforms are totally different from each other, right? They aren't. It's all putting data in buffers, pushing parameters on the stack, and jumping. More importantly, the backends were tiny compared to the game engine.
This perspective makes it supremely frustrating anytime I try to get a 'normal' programming job, and run into the 'but do you have .NET4, ASP.NET Core, and JS6??' mentality.
There really is only a few post-game programmer job that will use the skills you've developed creating games: science and new technology development. That is where you'll find developers and dev shops that respect coding without frameworks (because the platform is so new there are none) or without the popular, latest dev tool toys. Working in such a shop is often supremely satisfying because your job is to make that new platform conform to modern development standards. A job an experienced game developer does on their own anyway.
Great advice! I did front and back end web dev at Microsoft for a few years. One of many nice things about working there was I, personally, didn’t get typecast too much. Though, ironically, after my web stint, some game teams didn’t want me anymore :( But I eventually did find a role in HoloLens.
What matters is making a cool game with whatever tech is available and ship.