“I have seen some Youtube videos featuring Thomas Sowell as well.”
Yes, I believe that several such Sowell videos have even been cited on this very site over the past year or so. The voice is dead-on Sowell ... but likely trained on videos of interviews that TS mostly did 15-25 years ago. And that’s the tell, a 95-year-old Sowell talking about current or recent past events would sound closer to 95 than to 70. Of course, many listeners are not necessarily well-informed enough to realize that Sowell is now a very old man.
Before you put words in my mouth...
..be sure to let me know what I think.