Some sites are unusable with this extensions; links are not-clickable, page is not scrollable; probably this is because site is "locked" when shows popup about cookies and this extension hides this popup, so you cannot do anything

Breaks too many websites.

It's a great addon but just like @Aenfa said below, it's starting to break. The github page of the addon doesn't show too much recent activity.

Abandonware. It seems the dev has completely abandoned this extension. No updates for over 7 months and it's breaking more and more websites. Dev needs to wake up.

The extension doesn't work for me. I'm still seeing cookie messages.

Very good...but not often updated. It's already been three months since the last update. Has it been abandoned?