I'm not so sure of that. All of the PLA hinge assemblies sent to me from a customer for use in their clamshell testing units broke pretty quickly, like within a month or two of install. My resin-printed ones are still holding strong 3 years later.
It's also reasonably likely that your resin printers are solid resin, while the PLA likely wasn't solid PLA... but that depends on slicer settings, so I wouldn't know.
FDM printers are mostly used for prototyping. If you're doing that in a commercial context then the design time vastly outweighs the material and hardware costs, so.. polycarbonate would be a good default. It's hellishly strong, even when 3d-printed.