Welcome to Amiga games, in many cases the floppy would contain the boot loader that would directly jump into the game.
At least on the Amiga 500 you would not go through the trouble to start Workbench, only to load the game, unless you were a lucky owner of an external hard drive.
Your comment said "welcome to Amiga games", as if it were unique to Amiga. The context of the thread is PC, where they had their own booter/bare-metal games.
So you don't have to go to "Amiga games world", you're already in the proper world.
And yet, your little slice of the world doesn't represent the world at whole.
If you're ignorant of the situation, maybe don't come out with such a self-centered (and arguably, arrogant) statement; and especially don't double down on it when corrected.
People also have have the choice to ignore their racist grandparents spouting right-wing ideology or try educating them out of hope they'll shift their viewpoints.
Unfortunately, like many in that group, it seems you'd rather double down on your ignorance.
I recall many IBM-PC games are bootable games. I inserted a floppy , resets the computer, and then it directly boots into the game. The disk must contain a boot sector and drivers and such.
As well, although I think in the Amiga this was more common, to buy games that were already prepared like this.
At least on my circle for doing the same with PC games, we built the floppies ourselves, then again, it could be a side effect that you could hardly buy any legal games in Portugal during those days, even regular shops would sell pirated games as originals.
At least on the Amiga 500 you would not go through the trouble to start Workbench, only to load the game, unless you were a lucky owner of an external hard drive.