You have to love how the regulator did not even try to define what they mean by "annoying". Thus making the whole law completely useless.
In my book, any single pixel of my limited screen real estate that gets dedicated to this useless regulation is annoying. If the EU wants to enforce this, they need to provide a way for me to basically say "Yes, I agree with all tracking cookies for all sites forever", and never see a banner again.
More importantly IMO they are also contacting entities up front to tell them about violations and how to get compliant, the fines we have seen yet seems (again IMO) to be only for particularly nasty cases and/or cases where the entities in question refuses to change.
This means the fines we are seeing is just the top of the iceberg: most changes happens underneath the surface and only trickles up in the form of less annoying websites (or fines) little by little.
By law it's default opt out for non-essential usages specifically to deal with people who are annoyed, but not everyone plays by the rules.
They want you to have a bad experience if you decide to opt-out of detailed behavioural tracking, so that you'll feel pressured to "consent" to detailed behavioural tracking, and so you'll feel like the GDPR is to blame, even though it isn't.
I've put "consent" in quotes because it's not freely given consent if you are heavily pressured into it, and it's not consent at all if you end up believing you don't really have a choice.
These banners/dialogs do not even comply with the GDPR (despite saying the GDPR requires them), as GDPR says consent to non-essential personal data collection about you must be as easy to withdraw as it is to give, and the service you get must be the same if you don't consent as if you do.
I wrote a bit more about this here: https://news.ycombinator.com/item?id=25441131