my own (super limited) experience: so Coffee Bean (0.1 Super Cinnamon paradox) is a late 2017 hatchling, and came to me at 92g on 8/22. she's now 721g as of last night, presumably empty. she's a bit squishy; i think she might be fat.not obese, mind you, but i mean that's a heck of a lot of growth!!! my almost 2 year old CG girl is still under 700g. Coffee Bean was fed on a 3 or 5 day schedule when i first got her, but that was for about a month or so as she was constantly striking the side of the tub, and then she went to a rat pup/7 days. i also don't have much experience with bigger beeps as my biggest is my 800g+ 1.0 Albino but he's very obviously lean and muscular.
i have not seen many instances of obese BPs on here, especially older ones. Godzilla comes to mind when @Godzilla78 first got her; he had stated she was pretty fat and she slimmed down a lot thanks to him. he does not own that snake anymore, i believe. that's the only one i can think of from recent memory.