I think I have an idea about what game development entails
I've been a commercial game progammer since the Gameboy Color days, literally millions of people have played the games I've worked on, and I've also released an indie game by myself, been a part of multiple indie teams, some projects that shipped, some that didn't. I've worked for companies that worked on complicated AAA 3D console games, we tested those, they never needed patches (that was still in the days before patching became common).
Modern games are either not being tested thoroughly, or are being released too early and ignoring the known bugs. But we're also not talking about games of that complexity anyways - we're talking about retro-style games, games as complex as what you would experience on old 8-bit and 16-bit consoles and arcade machines. And those games were released without need of patches back then, and we didn't have teams of 30 testers or anything crazy like that.