>Can you point me out to left leaning content that gets demonetized constantly so I could compare with the right leaning one. I've not seen this happen in people I've subscribed and would like to see if this claim has any merit.

Is there a public notification of what videos are monetized? I'm unaware of one, and my quick check shows the poster gets one and some proprietary services that can supposedly check.

Without a public way to check, you would he unable to distinguish actual bias from which side complains more.