I think you're exaggerating a bit.

From 2018:

https://www.businessinsider.com/tour-de-france-wider-tires-l...

"It depends on the road surface, but 10 years ago the standard was 23mm tires at 8 or 8.5 bar, or 115, 120 psi," Brown said. "And now it's 25mm for regular road racing and 7 to 7.5 bar for front and rear, so a little less than 100 to 110 max on the bikes."

2mm and 10psi less is not that huge a difference.

True. And these days, "wider is faster" is the cycling myth in need of getting corrected. Because is mostly a tie, with a very soft optimum between clearly worse extremes (neither 10 mm nor 10 inch would be fast). And people who feel in the mood for "overthrowing the old" will often do comparisons were they lower pressure on the wider tires, but don't really lower then adequately, they compare a narrow tire at the lowest and of its useable pressure range to a wider tire at the high end of its range and, surprise, with these conditions the wide one rolls easier. The assumed optimum has shifted, but it hasn't run away.