I go into detail in another post (search for make games, not engines) but the original meaning behind the phrase wasn't "do not make engines" (at the time it wa

I go into detail in another post (search for make games, not engines) but the original meaning behind the phrase wasn't "do not make engines" (at the time it was originally posted you pretty much had to make your own engine) but "focus on your game's features when making your engine". It was meant as an advice to avoid feature creep in the engines people were making. Essentially another way to say KISS.