It's been explained a thousand times.
Races must be measured by the demands and intensity of training, not days.
Pogacar can win one-week races at 70% of his peak form, but he has to race Roubaix at 100% of his peak form. For those stage races, he can train more gradually; for Roubaix, he has to be at maximum intensity. The training sessions to Roubaix are much more demanding and exhausting.
And it's not just the physical aspect; mentally, racing Roubaix or a WC is completely different from Valencia or Tirreno.
Anyone who refuses to understand will continue to say that Pogacar only races five days before Romandie and that Remco, for example, has put in more effort between the Mallorca and Valencia .1 races because are more days.
We can use Pogacar as an example comparing his races. Pogacar had to train less and exert himself less to win Catalunya in five days than in one day for Roubaix.
It can't be explained any further. He's explained it himself. Anyone who wants to keep saying that his spring scheuddel is less demanding than Vingegaard's or other cyclists who race one-week races
only taking into account a day counter they´ll never understand.