I work in IT industry as well. You seem to be extremely opinionated for some reason.
I don't work in IT, I work in expert Product Support.
You're in IT, so this isn't likely something you deal with.
When you have a problem, unless it is safety or security, you don't immediately announce it to the world.
First, you try to understand it. Part of that evaluation includes the number of cases. Based on what we are hearing from Apple, it would appear the issue seems to have ramped up around 2017, which makes sense because the MacBook Pros would have been in use for a while by then (I'm not convinced, due to the super low travel and low adoption rate, the MacBook generated that many incidents).
My guess is from there Apple began seeking new scissor switch suppliers while understanding better what was happening with the butterfly keyboards. Development of a new keyboard takes a hell of a lot of time due to hardware, software updates as well as the extensive testing involved.
In the meantime, they have to keep selling laptops and did what they thought would fix the keyboard failure issues. The double key thing is weird and I can't figure it out. I would assume it's actually an unrelated issue to the key failures that cropped up as an aside.
What I don't get with your opinion is "why are you whining about Apple being secretive?". They're an IP company. Most of the good companies don't.