You could argue that you're stealing their extra revenue though.
The "problem" (I'm in favor of skipping ads) is that a business has setup a way to make money based on some theoretical consumer model, and they would prefer if the consumer behaves like their model. However when consumers are easily able to control the product they will avoid anything that is unpleasant and only consume the thing that they actually want.
As long as you’re paying more than they’re making in ads per person I think it’s fine but there’s nothing saying you can’t consume ads as well. Ideally the producer sets the donation price and provides a way to disable ads if you’re donating.
Extra revenue can come from higher pledges and merch but isn’t guaranteed.
The "problem" (I'm in favor of skipping ads) is that a business has setup a way to make money based on some theoretical consumer model, and they would prefer if the consumer behaves like their model. However when consumers are easily able to control the product they will avoid anything that is unpleasant and only consume the thing that they actually want.