Usually what you see is about $1 per 1000 views (CPM) for US creators. This number can be much lower depending on which country you are from - US is the highest.
Since "adpocalypse" (advertisers pulling out of YT ads) and some other relevant events, CPM has gone down significantly for everybody. While we were making about $1 CPM a couple years ago, we are now doing about $0.50 CPM.
With that said, most business-savvy YouTube creators have known from the beginning that YT ads are a drop in the bucket compared to the potential of revenue that you can make using other monetization methods. Patreon is one way, but merch, live shows, and digital products are examples of other ways that a creator can make way more money from their following.
For example, one of our channels with nearly 1 million subsribers only made about $4000 per month on YT ads at its peak. During that same time, it made over $15,000 per month just selling t-shirts (3x+ more than ads).
Another one of our channels that had over 2.5 million subscribers was making about $10k per month on average at its peak. By selling our own digital products, we were able to make over $200k per month (20x YT ad revenue).
I know this was kind of a long answer but basically - for the YouTube creators who saw their channel as a business, not much has changed. YouTube ads continue to be a very small percentage of their overall revenue.
On the other hand, YouTube creators who were dependent on ad revenue are now feeling the pain. However, I actually see this as a blessing in disguise because it forces these creators to look at other ways of monetization and to view their channel/brand as a business rather than just a content creation machine.