I used Simple Tabs Group before, but its been a while. And with my quick testings of the new Tab Groups, its not quite the same. For one the Tab Groups are integrated into the Tabs itself and not a separate menu. You may like it or not. Overall Simple Tabs Group has much more configuration and options.

But overall it does the basic job of this addon. The biggest plus for me is, that I do not have to install and configure a third party addon, and trust it. I predict most people would not need such an addon anymore, if they don't want to deep dive too much.