Passing through. When I get back to this, let me make sure i understand. Your argument is that the climate warming we are seeing currently, with currently meaning the inception of direct measurements in the 1880's, is part of a natural warming trend that began 20,000 years ago at the trough of the last isolation minimum?
Its seems to me, we are at, or near the top of a warming trend that started roughly 20,000 years ago.
The inception of current measurements plays a role, as far as it is continued for many thousands of years into the future, in determining the validity of past forms of measurement.
Today, we can see a sub-warming trend within the overall trend that picked up after the 1880s. Coincidentally, the 1880's signaled the end of a sub-cooling trend within the larger warming trend of the last 20,000 years.
So, yes, we are at, or near the top of a warming trend that started roughly 20,000 years ago.
Looking at some measurements, it appears we are in a plateau, where things can swing up or down, before the inevitable descent into cooler, and less hospitable days.
Its not "my argument", its just an observation based on historic patterns.