Even before the industry was heavily regulated and hours limited, long-haul truckers chose to pee in bottles for efficiency. Faster, safer and made them more money.
Also do you have any idea how long it takes to get in and out of a construction crane? And how dangerous? It's absolutely a physical constraint. Operators have to climb and it's about 15 minutes each way. They have to take breaks so they don't get sweaty. You absolutely do NOT want to do that when you're holding in piss.
https://www.amazon.com/trucker-urinal/s?k=trucker+urinal
Also most roads are straight and modern trucks are incredibly stable. Plus cruise control exists. Peeing while driving is really easy, especially in an elevated chair seat like they use. I've done it a few times.
Ironic considering bothering to use a potty is a very, very modern sensibility.
By the way, I think you got downvoted because using a Marxist technical term such as "late capitalism" without proper elaboration only serves as flamebait. Those who are not already familiar with the theory have very likely only seen them in the context of Marxists airing their grievances on social media and/or aggressively engaging with Conservatives.