I remember sitting around being all sucked out, waiting to weigh in for one tournament in college in the late 00's, and our coach told us stories about what it used to be like with 24 hour weigh-ins. Just insanity, dudes doing everything under the sun to suck water out of their bodies, but then also being able to just go back and get absolutely massive by the time they were actually supposed to wrestle. I think this is something mitch clark talked about in his book, saying he weighed at or over 200lbs by the time he stepped on the mat for his 177 lb ncaa finals match.
But yeah...the weigh-in rules are a good thing. Look at how much weight UFC guys suck out and then put back on. 205's walk around ~240, 185 guys weight ~220 by the time they get in the cage...
Even though pulling weight is still a thing, I'm glad they put brackets on it, it has taken the worst 15% off of it, and now guys either perform terribly or just miss weight, which is a walk in the park compared to other serious downside outcomes.