About as poor a start as I’ve seen from Novak ever. Yikes.
And you know, the funny thing is that after the match, Eurosport asked Alex Corretja when he thought Nole had the match in hand, and he said "After the second game." "Even though he was broken" they asked? He replied that yes, because Djokovic didn't look fazed at all, and had a way about him that said he was "ready for business." My wife--a HUUUUGE Nole fan--said the same thing: of course you never know what's going to happen, but he just didn't looked too bothered. Turns out they were right, so...take that for what it's worth.
As for the GOAT race: I don't think it really matters, but yeah it's Djokovic. For fans of all tennis, just think how good we've had it getting to see Federer, then Nadal, and now Djokovic over the last two decades. Amazing. I remember when they were talking about how crazy it was that Sampras had won 14 majors, and how no one would get that for a long time.
As for the Calendar Slam: well, he's the only one who has a chance (ha!) but it will be a tremendous hill to climb. Alcaraz, Sinner, Rune, Medvedev, all have shown form on grass before and all are a year better from 2022. Personally, I hope he does it. But I wouldn't lay odds on it.