2031? I believe Seixas could win the Tour in 2028-2029. He already seems close to Vingegaard and give it two-three years more and he could beat Pogacar as well.....
Probalby he is not quite ready YET, because he needs experience from Grand Tours and I am not sure that in a three weeks Grand Tour he could already go on the podium. Potentially yes, but the risk is that he would have one or two off days that could cost him 2-3-4 minutes, because he still lacks some experience.
But will Seixas do the Tour this year? I have not heard about what his plans are. Surely, I would really like to see all the big names in this years Tour. Pogacar, Vingegaard, Seixas, Evenepoel, Ayuso, Gall, Pidcock, Almeida, Roglic, Lipowitz, Skjelmose, Del Toro, Healy, Riccitello, Hindley,Pelizzarri, Buitrago, Uitdebroeks and so on....