as the last football world cup showed us, as long as fans conveniently ignore the truth of exploited workers and lap up the sporting spectacle, the troubles of construction labourers are nothing to worry about.
There’s a good chance that those will become too hot for athletes to compete in in most cities (or their former sites) by a few decades later. Of course long before then, the Olympics will have stopped happening as the apocalypse takes hold for real.
IOC: "So, would you be interested in hosting the summer games in 2052?"
City below/above +/- 60° latitude: "Nah fam. We're all booked up boiling alive from now until forever. Maybe try Reykjavik? I hear they have comfortable, sub-100 weather year round, nowadays."