How does the How-To block differ from the built-in media & text block?

Single blocks -v- block collections is an interesting point for me. It's the JetPack Effect: in order to get the one or two functions you want you have to download lots you don't. Imaging going into your Plugins menu and finding every single plugin pre-downloaded for you...

In an (my) ideal world block collections would be a single plugin which allowed you to download, install and activate only those blocks you wanted. That way you don't end up with half a dozen accordion or tabs blocks, having to turn them all off when you didn't want them in the first place!