Since when were music and technique separate?
I made no such claim. You probably mis-read.
Good, good. How did you manage to overcome that difficulty?
I would tell you but, in my experience, it wouldn't help you nor anyone else so I won't bother writing about it.
I will probably write in-depth about one part of the speed problem because I haven't read it on this forum.
Sorry about the harsh tone, but to say "I have no problem with speed," doesn't help anyone.
By telling others that "I don't have a problem with speed" is saying that what is not (currently) possible for one person is possible for another. In other words, it's piano-playing - not growing wings to fly.
As for searching, I assume people here have common sense to do so. 
Most people don't do a search. That requires a bit of extra effort that they aren't willing to do. The information they want is all here but most people will choose to do what's easy for themselves.
It's easier just to start a thread about the same topic that has been asked numerous times before. This is the reason why there are so many duplicate threads about speed issues. Another popular one is sight-reading.
These topics have all been discussed before. There are indeed excellent information contained therein that would answer most questions and yet these threads proliferate.
However, at the same time I would not want to discourage asking questions but the answers are already present.
Starting another thread about an oft-asked question usually results in lack of interest by those who are very knowledgeable in that area. As a result, the quality of responses in these duplicate threads drops to a basic or ignorant level by those who don't have the knowledge.
There are, of course, severe limitations of such an approach. One of the limitations is that bad advice can proliferate because those who are knowledgeable don't want to challenge it again for the n-th time.
Sometimes this bad advice is clearly evident. Sometimes it is not. When that bad advice is naively believed? Caveat emptor.