Fixed it for you.
If the fields were both sinusoidal waves, or matching modulated waves, they would simply cancel each other out. You can verify this yourself by misplacing stereo speakers.
That doesn't happen with circularly-polarized antenna systems. Intermodulation products DO occur if nonlinear conducting items are present within the field, such as rusted points on chain-link fences atop mountain communication sites.
So you're talking about quadrature amplitude modulation then. It's been done. A lot.
https://www.microwave-link.com/microwave/qam-modulation-for-microwave-links/
You don't need to be Tesla, just study RF engineering.
Modulation is created in the transmitter rather than the antenna (in commercial systems).
No. A yagi is vertically polarized (or horizontally if you place it sideways). Not circular polarization.
I've been discussing free-space propagation originating from commercially available communications systems. Circular propagation is a thing. Just not what the anon has thus far posted about, apparently.
Left-Right is a false dichotomy. It omits the spectrum of control, from anarchy through totalitarian dictatorship. There's a lot of middle ground in that spectrum, and most of the confusion about left-right is because of the control spectrum. Picture the control spectrum as up-down and orthogonal to the left-right issues.
Toroids are not evil. They are naturally-occurring forms which are found in many places, not just magnets. Drawing an equality with an owl's face is stretching into meaninglessness.
Thanks to your comment, I just realized I fell for a slide attack. I'll lurk more.