The plain fact is, Frontier cannot produce one single release without bugs and shoddy quality control. They have proven that time and time again.
Hah! You win the most funny comment of the week reward!

I mean, i have a bit of a background in testing. Not game test. (I also was in some betas and stuff, but that was private fun and doesn't count in this regard. Also, most game companies beta testing doesn't even meet the bare minimum standard of any real testing. This games betas included. )
I started out in semiconductor testing, now since over a decade work as software tester. And at least based on my experience, i would say that the rate of bugs and problems of ED is not exceedingly high. I've seen actual commercial software being delivered to the customer and being accepted in worse shape than ED ever was. (Of course there were some bugfix cycles afterwards, but that doesn't change the fact that the delivery date was kept, despite the quality was lacking. Sometimes even as the customer insisted on it. I guess the working part was more important for them than the troubles they would have with the bugs. What can I say, I am only the tester, not the user. )
So no, of course ED is not perfect. I disagree with a number of design decissions and also noticed that sometimes the delivery date was considered more important than quality. (Which was a bit astonishing here, as we customers were not given a fixed delivery date in advance. So they could've delayed things a bit to fix things still. ) But the rate of critical and gamebreaking bugs is comparatively low for a game of this size. So i would guess that their QA team might be too small (it almost always is), which forces them to focus on the essentials, but within their capabilities they seem to do an above average job.
And all of this i dare to say before looking at it from my gamers experience. Where i have to say that spent a lot of time, sometimes over a year, in games which had way more severe bugs and problems. But as long as we players had fun and were able to work around them, i guess we accepted it.
So yea, i just can't agree to your assessment that ED would have exceedingly low quality. I am ready to rant and be angry about a number of design decissions, most of all PP and engineers, but on the technical side the game is not doing that bad. (And for the record: I consider the P2P architecture to be a design decission in the scope of this statement. )