It’s that leftists are increasingly categorising reasonable discourse and arguments they don’t agree with as “extremist right wing propaganda” (or just Nazis), and based on that get accounts defunded or banned.
The left is widening their already rampant use of censorship.
Allowing one side to dictate what the other is allowed to say is generally not good for a democracy.
You're also welcome to take your business elsewhere, if you wish YouTube had more Nazis on it.