False. The geologically recent evolution of horses never experienced bottlenecks.
Now that I read this, I just realized what you are responding to. The term bottleneck used out of context as I recall was inappropriately redefined to mean something it isn't. If memory serves, it was repeatedly described as some sort of speciation event where gene frequencies change at an individual or family level was referred to as a speciation event without a new species actually evolving. Though one is claimed to have evolved. By fiat I suppose. It in no way reflects a bottleneck as defined in science. I suspect this semantic juggling act occurs to avoid admission of the proper application of the correct term. Which, of course, is selection, whether natural or artificial.
Recognizing you probably know this, but considering it worth repeating, a bottleneck or population bottleneck is the drastic reduction in population size that often means an similar reduction in population genetic diversity. It is not a speciation event. The species is the same on either side of the bottleneck event.
All this semantic juggling and redefinition without supporting evidence to avoid admitting the act and actions of selection is the sort of argument that I see as representing the pinnacle of anti-science thinking and arguments I have seen on this thread.
No assumptions, only objective verifiable evidence. Science acknowledges bottlenecks in nature. Bottlenecks occurred with sudden extinction events in geologic history such as occurred at the extinction event of larger animals like dinosaurs.
Indeed, I see that I was just repeating what you have later defined here. But given the proclivities of some actors in this debate to avoid the facts, seeing those facts repeated may serve some purpose if nothing more than to emphasize the actual terminology and the proper use.
Actually, you have not presented a coherent hypothesis yet that explains billions of years of the history of life.
And I don't see any reason that there will ever be one forthcoming that is more than speculation, overactive imagination and empty claims.
Still, I find it interesting that this thread is still going on without one anti-science proponent coming up with any sort of valid argument that is more than denial and rejection out of adherence to the personal view that what they believe about the world is the reality of it.