Almeida's literally never climbed with the very best in a GT and this isn't exactly a TT heavy route. Evenepoel is the only wildcard they have
Almeida is 22 and has literally done only one GT in his career so far. His climbing wasn't at the level of the best GT climbers, but was right behind them. He has shown good climbing performances this season also. Both in T-A and UAE Tour he was objectively worse only to Pogačar and the Yates brothers. His climbing level was comparable to Landa, Quintana, Buchmann, Kuss...and he out climbed Bernal on Prati di Tivo.
In my opinion there's no question Remco is the better climber and the better GT prospect, although Almeida is a very big talent, too. It's just that Remco is an exceptional talent. BUT...
..., I really don't get the talk "X rider has never shown skill xyz at a certain level, so he'll never reach that level." Why? Especially when we are talking about talented young riders. Tao has never shown he can climb with the best either, yet he won a GT last year. Similar to Hindley, yet he was arguably the best climber of the race and finished on the podium. Pogačar also has literally never climbed with the best in a GT before the Vuelta 2019, but he finished on the podium. And he never did a great ITT before stage 20 of the Tour last year, but then PDBF happened.
We are not talking about a massive transformation here. We are talking about a good young climber (Almeida) becoming a very good climber. That's completely realistic. We've seen stranger things happen in cycling, that's for sure. For one, he showed last year he can cope with the 3 weeks and doesn't fade which is a very important "skill" to have.
Similar with Remco. People doubting him say "He has never done this in a GT. That's a different sport. I need to see it to believe it." Well, no shiet. He has never ridden a GT, that's why he hasn't shown a thing yet. But I see a way bigger chance that he becomes a great GT rider than the other way around. To not be able to translate your strengths from a short stage race to a GT is more a rarity than the rule. How many great GC riders in short stage races can't ride for GC in a GT? I can think of just a few in today's peloton. Ion Izagirre (he has a Vuelta top 10 though), Schachmann (who hasn't even tried yet I think), Rui Costa, maybe Benoot. That's about it. So I'll assume Remco is one of the 90% of GC riders who can. If he fails time and time again like Rui Costa did, then I'll change my mind. I don't think he'll podium this Giro because other reasons (injury, long lay off, no racing rhythm), but that's another story.