I would much rather use that bar of soap than the mysterious liquid gels full of dyes and other junk. If natural tones are somehow gross and icky but a blood red goo that faintly smells of petro chemicals is fine then maybe we really are doomed as a species.

You go back a century or so, that bar of soap would likely have been considered a luxury product.

For real though, Gojo soap seems to work the best for getting rid of grease and oil from machines. My guess is regular soaps don't do a great job at carrying away the oil residue, but Gojo soap just sands down your top skin layer to remove it.