Humans were not making solar cycle observations 20,000 years ago. Can only make crude approximations using proxy data for that time period. Here you can see that higher activity levels began around 1750 after the Maunder Minimum mini-Ice Age and again at around 1840 for the Dalton Minimum.
That is more or less the extent of our observations. So is he saying that we have entered a higher activity level starting around 1750-1840 ? Recent solar activity has been trending downward since the modern peak during the late 1950's and early 1960's.