Perhaps it's purist to think that everyone who does cyclocross is a god.
It's something you notice in some cycling circles. Cyclocross riders are untouchable in many ways: from criticism or accusations of "clinic" accusations that other cyclists suffer.
If there's purism, I'd say it's actually the other way around. The cyclocross fan is the purist and the one who puts these riders on a pedestal. It has to be admitted that the standards for criticism aren't the same; they enjoy a special kind of immunity from the fans.
As has been rightly said, everyone who can succeed on the road ends up prioritizing road cycling.
If Vandeputte doesn't win on the road, it's because he can't.
Van Aert is far superior to most of cyclocross riders, and Van Aert is far inferior to Pogacar in the Monuments. But we're being purist by thinking that seven cyclocross riders worse than Van Aert wouldn't win a road world championship.