Let me explain my point of view so you will understand it. Going down to your level of understanding for this one. If i buy a car i don't care if it has engine already used and tested in another car or not. I want it to work. I don't want that car left me in the middle of nowhere just cuz that car have build engine from scratch. I want it to work. Same game engine doesn't mean different skin. The engine is tested and the devs know it works that is why it's used. Rage-quit? More like i quit cuz i bought this game for my playground not devs. I am a customer just like you and i will post in here as much as i like since i bet you haven't payed more for the game itself that i did. Maybe you don't experience any problems and I'm glad you don't. But i do.
All i can say is thanks god this is not some business software. They will be gone by now.
You knew coming in to this game that it was a ground-up work in progress. The sheer magnitude of what they are offering in game requires that they add on to it repeatedly. It would take a development team 20 years to test and implement a game with all the features they intend, then release it in perfect order. And the Beta testing would burn out over time, because it would still require people to test everything. With a full player base, they can actually find the bugs and deliver you the game.
Essentially there's no way a game like this could have ever emerged. Not with the scope involved, the depth of future content, and the player input and dynamic environment. No developer would touch something that took this long, and they couldn't find enough Beta testers to find the bugs.
So you can think of it like you're being forced into a testing environment, or you can recognize that you can be a part of a team that actually delivered the most ambitious game in history. I've seen station bugs only up until the end of Gamma, no more bugs since then, so your experiences aren't as common as you might believe. So the game is largely working as intended.
The other analogue, Star Citizen, another game trying to be as ambitious as this one is, has been frustrating people to no end and become the subject of endless mockery for the flood of new ships that just bring the developer more cash.
But Star Citizen would actually take 20 years to become as vast as Elite Dangerous. Elite Dangerous can do it in five, maybe even less. And that all comes down to the active ground-up construction model employed by Frontier, and the huge amount of people to help crunch data.
You shouldn't quit on this game, because this is the first game of its scope and magnitude, ever. Eventually we get planetary landings, and a whole lot more along with that. Only when its implemented in Elite Dangerous, that will equate to hundreds of billions of planets to land on. All at once. That's what is fascinating about this game, is it will spontaneously become orders of magnitude larger than its current size, on several different occasions.
So by the time you're thinking you might get bored (rather than just frustrated with the bugs that have been worked out months prior), you will suddenly get ship boardings, PvP with laser pistols, landings on alien planets, etc. Then you've got to pick up and learn an entirely new game, within your existing game. That is fun. That and the sandbox model mean you've always got something new and relevant to do.
So you can focus on the temporary bugs, or you can recognize that they are almost all gone and enjoy what you have. Because what you're going to be able to get in a few years is frankly ridiculous, and by the point that it's available, you'll be really kicking yourself that you don't have a Python or better by then. All that time wasted that you could have been getting prepared.