Essentially you're saying you don't really know what you're talking about.
His 4th place in the 2021 NC (when he had just turned 21) he finished on a flat tire that had been gradually losing pressure in the final lap. He finished 20 seconds behind Campenaerts and 40 seconds behind Evenepoel. Maybe you should check how many riders generally finish within 40s of Evenepoel in a 35k TT, let alone on a flat tire - wait, let me put one of these because i know you like them:
He was also 3rd in the 2020 U23 ECC TT over 26km, just 5 seconds after 2 year older Bissegger, but i'm sure Bissegger also can't TT for ***. His time would also have put him 5th at the pro's who rode on the same course, ahead of Affini. You may know who that is since he is the second best TT'er of his country which you claim is the best TT country in the world. Insert smiley of your choosing.
Turns out he came up 13 seconds short to beat Ganna in GC, which was what we were discussing. So tell me, you think it would have been impossible for him to be 13s faster had he had just a slightly better day? And remind me again how Almeida did, who had proven to be a better TT'er?
But to be fair, i think Van Wilder didn't even do his best TT, but he also still doesn't have a fancy aero cockpit like Ganna, Küng or Foss, which are said to offer up to 6% CdA efficiency.
As for him being relatively better at longer TT's. He's a GC rider, take a guess.