You guys are completely making up what he actually said. He never said consoles like PS4 sold less than the PRO or X1 sold less than X1X. Neither of those consoles were "budget" versions from their inception. They became "budget" once an upgraded one, more powerful one came out years later but they were never considered lower level option console.
What he is talking about is like the gimped all digital X1 console, Nintendo Wii mini, Nintendo 2DS etc. None of those made any considerable sales nor are even talked about anymore so he is right. Hell, even the Switch Lite isnt a budget option because all its missing is joycons and TV access but its still same hardware.