They were. They were pretty much no-go zones in Alpha. Now, it's possible to navigate them - which is a relief because there are some planets out there that are nothing but that kind of terrain with a few rubble dusted areas.Looking back, I wonder if that was really an error. It shouldn't have been necessary to touch other aspects of the terrain geometry if it was an artifact. A simple filter to clip the artifacts should have been sufficient. But well... i'm not part of the FDev team, so i probably underestimate the issus.
It's not broken... it just doesn't suit your style of play. Not broken does not mean their are no issues.You didn't even answer the question....
I don't think anyone expected a rose garden (they'd have been disappointed anyway with the new plastic flora!), but they didn't expect to have their gameplay actually removed. That it was is a problem for them, and me.
Your points about adaptation illustrate how poorly you understand the issue, and an inability to consider it - like an old dog unable to learn new tricks. This ignorance should not be the basis upon which anyone writes off an entire activity enjoyed by hundreds of players, nor should some weird prejudice or faux-outrage at complaints. No hyperbole here.
Calling for terrain to be changed to allow for extreme flying poses no threat to other styles of play. It could even enhance the experience for others and offer the opportunity to do so if they wished. It's not possible in Odyssey now though, and won't be possible in Horizons post-changes. It does mean accepting it's currently broken though, hence the point of the OP and lots of others here in this very thread.
Perhaps it demonstrates how little you know about other styles of play that you think it would all be okay if we just went back to Horizons.
They promised Space Legs, they promised more realistic terrain, better biology and better geological features, they promised planets with different biomes, nowhere in all of this is the promise to make it all hoonable. You are not wrong in saying it does not suit your style. Your style of play is not the be all and end all of Elite Dangerous. Just because you make a lot of noise does not mean you are somehow right in your assertion that it is all completely broken and needs to be fixed so you can hoon.
'Our research told us that 84% of our people want X' is no grounds for doing anything! FDev is fulfilling promises in EDO and you don't like it. You make noise. I'm not going to go politely "there, there, it's okay... let's play along with the shouty people."
It's not broken. Saying it all the more in your head (and on the forums,) it's not going to make it real. The tree that does not bend with the wind will eventually break.