IMO, retirement is a journey, not a destination. Life is too short and unpredictable to say "I'm going to work really hard, retire early and then
start enjoying life".
Recently, someone I knew from work was lost to pancreatic cancer within about 9 months of diagnosis. A great guy, previously healthy, in good shape, mid-40's.
Not sure if that's the philosophical conundrum you were exploring, but that's my take on life.
FWIW, I also had no idea what you were talking about with the Money Mustache reference or the FIRE reference. Evidently Steve had
his own interpretation....