I think it more ” natural ” for muscle to get stronger than it is to get constantly bigger?
Yes, to a some degree they go hand in hand but getting stronger is just adaptation and over compensation.
A bigger muscle is a stronger muscle if say tested in some machine where you can't adjust the technique much (after the initial neurological adaptation period, some say this takes about 6 weeks of doing a new exercise), "muscle strength is directly proportional to its cross sectional area," it's said, that is comparing a subject to himself, not someone else with different attachments and psychology, whatever differences there are affecting demonstratable strength. In powerlifting a big part of getting stronger while staying the same weight has to do with more and more efficient technique, not as much as in weightlifting, but it's still there. So demonstratable strength doesn't just have to do with individual muscles getting stronger per se. As you see I'm including lots of qualifiers trying to preempt follow up questioning of my claim, so it gets a bit too wordy. Not saying I'm necessarily absolutely positively right either, this is "as far as I know at the moment."

Yep
Dieting for the O, Ronnie would eat bbq chicken with fries, ate out pretty much every other meal at restaurants
Dexter was eating hibachi a few wks out of the O
Just adding to this, not arguing, someone like Ronnie most likely wasn't 'eating like shit' or eating haphazardly without counting intake. Chad said he was counting BBQ sauce, which Ronnie "needed" to make it go down for long periods of time, and the calories came out of the food carbs like rice etc. And obviously you can eat limited amouts of 'crap' while still starving and 'dieting hard.' Ronnie's face told the story. Of course some pros go off their diets and cheat, but Chad claimed after some O he asked Ronnie, "ok, how many times did you cheat?," and Ronnie said not once and Chad said he believed him unlike some others. That's the story, could be partly baloney, but point being there can still be a plan that is adhered to no matter what you see in some snapshot in a video.

Vince Taylor, if we go by what he said, just ate what he liked
ad libitum, but often the extent is exaggerated for effect, you don't get to be a pro winner with no effort or indeed suffering a bit

Some said Vince used a lot of drugs by pro bodybuilding standards too, "would never ever miss a shot." I still remember the first article on Levrone in Flex I read. In it Levrone claimed he just ate hotdogs with chocolate milk and knew only 6 or 9 exercises total, at the time he turned pro. These stories are massively exaggerated or even dreamt up by the ghost writer.