Naturally, this is all phrased in general terms, and all hedged with e.g. the direct quote "While there is no one-size-fits-all number when it comes to a person's ideal weight, men should not ignore significant weight gain and the implications it has for their future health." Again, of course, you're pulling exactly the same sleight of hand: confusing a risk factor with an actual health problem. It's certainly not "true by definition" that being overweight means you are unhealthy, as you claimed.
https://www.health.harvard.edu/staying-healthy/can-you-be-ov...
UCSF:
https://generalsurgery.ucsf.edu/conditions--procedures/healt...