Does your old heart good to see. There's a fine tradition of fans forcing their way into stadiums for football, though it is unusual in all-seater stadiums.
When stadiums were mainly standing (ie no seats), it was pretty usual that many more would squeeze in. Hampden Park in Glasgow used to have an official capacity of 126,000 but they would regularly get over 200,000 (up until about 1975). I remember speaking to people who had either climbed over the walls to get in or, if you knew which entrance to go to, you could slip a fiver to the bloke on the turnstile (instead of the ticket which you didn't have and was the only thing the gatekeeper should have been accepting) and get in that way.
But even in 2020 in London, with all-seater stadiums and security in place, there was still a crowd charge by the English fans to get in without tickets at Wembley at the last Euro championships.
But having said that, and to be serious, seems to me that a key problem in Miami was the inability to handle a huge crowd like this. The reports would seem to suggest that normal control measures like security rings around the stadium weren't in place. They're pretty standard now - police road-blocks at all routes to the stadium to check tickets at least a couple of times as the crowd gets closer to the stadium (say 500y and 100 yards from the gates), so that only those with tickets for that stand get close to that gate. That's pretty standard behaviour now on big matches like this one. The other issue seems to be that it looks like there were counterfeit tickets, so again, there needs to the ability to spot those before you even get close to the stadium.
A game like Argentina-Colombia should have been a 'priority one' game for the authorities. It was was bound to have security challenges. And yet they seem to have treated it like a normal Dolphins game.