Tadej has to race Paris-Roubaix this year. Let’s say he has five peak years ahead of him, meaning a whole decade at the top, which is already quite a long time for a cyclist. He might get injured at some point or decide to race the Tour of the Basque Country or the Giro, which would mean riding fewer classics. In his best years, even if he races Paris-Roubaix this year, he might only have around three real chances to win it. That’s very few opportunities for such an unsuitable race for him.
This year’s Paris-Roubaix would also be the only race where he wouldn’t be expected to win. The same could be said for Milan-San Remo, but even there, a second-place finish would feel like a disappointment for him. If he were to finish in the top 10 at Paris-Roubaix, however, that would already be a promising sign for the future, even for him.
Every other race this season (Flanders, Amstel, Flèche, Liège, Dauphiné, Tour, Vuelta, Worlds, Lombardia) will feel like a disaster if he doesn’t win, which is a lot of pressure—even for him. I think this would be the only race where he could actually enjoy himself even if he loses, which is why he is so determined to race it.