If left-wing covers all concepts left of center, and many mild left policy still incorporates capitalism, then it can’t be reduced that strictly. I could agree that progressive or far left policy isn’t compatible with capitalism
Edit either way, we disagree on semantics. It’s off topic for the original question now (I’m not sticking that on you, I contributed to this semantic rabbit hole)
To circle it back, I think there’s a way to invite “normies”, maintain left leaning (even very left leaning) positions, and not compromise the platform.
Edit edit and I think that’s possible without purity testing or shotgunning people with theory
He was a helicopter gunner / pilot… Air resistance really matters!!