TwoSix
Everyone's literal second-favorite poster
But it's not an extreme example, is the point. They received extreme results from a pretty mundane setup. 5 players in a module known for being moderately challenging from a company that's pretty well-known with no major house rules seems like a pretty solid baseline.It's such an extreme example lacking so many details it's not setting much of a baseline. What did a typical encounter look like? What was the environment, the setup, the monsters used? Do they get short and long rests whenever they want? Did the DM even attempt to make the encounters more challenging?
And having a decent number of very rare and rare items in Tier 4 is hardly outside the normal parameters, nor is the players having some input into what gets made. 2024 didn't add crafting rules with the expectation that the normal table wouldn't have magic items.
And if they used too many...well, that's tough to say, since too many is going to be a function of learned experience since there's little guidance on the correct amount.