It's funny because Lando has been accused in the past of not being serious about his training (maybe because he doesn't usually post training content, maybe because of his gaming/streaming habits, idk) yet he was one of the drivers who ended the race in a better state.
He was tired, of course, but he didn't sit anywhere until the cool down room, he did the bottle smash in the podium, he kept his racesuit and fireproofs on through all the press conf, media duties, and the celebration with McLaren, etc. And it's not like he had a peaceful management race. He did a lot of fastest laps in his last stint.
Even Oscar was impressed by how Lando was still standing and chatting with the mechanics after his interview, instead of sitting/lying on the floor while the rest were interviewed.
These guys do a lot of silent work we don't see so we shouldn't judge them by the things they share (or don't share) on social media. Kudos to all of them and their trainers, they raced yesterday in the hardest conditions and still they delivered.