Nice strawman argument in the video there. Why can't something be accurate
and pleasurable to hear? There have been plenty of blind listening tests that show a strong correlation between listener preference and a reasonably flat frequency response on and off-axis(anechoic). Yet, we go round and round in circles.
If we assume an acoustically perfect room i.e. the room doesn't color the sound in any way:
With an "accurate" speaker chain, you hear the sound that the artist and the recording engineer thought sounded good.
With a "beautiful" speaker chain, you hear the sound that the product manufacturer thought sounded good.
Both of the above observations are subject to the caveat of Dr. Toole's "Circle of Confusion" that exists in the recording and playback industry.
Something designed to sound neutral (based on measurable criteria) can sound great, but something designed to sound great (as he says in the video himself, he may like an added harmonic distortion at the cost of measurements) as the primary objective can no longer claim to be neutral.
The choice is yours, but it is misleading to position this as an either or. If your taste in music genres is vast, and given the EQ choices available today, I see no compelling reason to start with speakers that don't measure reasonably flat.