Looks like a reasonable cookie banner to me: Deny (all), Custom selection and Accept all.

It even works perfectly with Consent-O-Matic extension.

It's a perfectly not reasonable cookie banner. If you click on Details, you can see that they're not using marketing, statistics, or any other kind of cookies apart from the technically necessary. Which is great, but also means that they don't even need a banner. It could just go away.