Hmm, looks as if the September date was indeed an error - even the article added a correction. (Also a Mozilla representative seemed to post they plan to keep local DNS as fallback)
So I do hope you're right and they will take their time until the ecosystem stabilizes and they found less damaging strategies.
I still think there are general problems with DoH and the assumption that all local networks are hostile. But maybe, there will be more time to discuss those assumptions.
I don't see that they will necessarily add a config GUI though. Most people will likely ignore the feature and the techies already have about: config, so there might be little pressure to add a more accessible UI.
So I do hope you're right and they will take their time until the ecosystem stabilizes and they found less damaging strategies.
I still think there are general problems with DoH and the assumption that all local networks are hostile. But maybe, there will be more time to discuss those assumptions.
I don't see that they will necessarily add a config GUI though. Most people will likely ignore the feature and the techies already have about: config, so there might be little pressure to add a more accessible UI.