It seems to a heavy-handed solution to a traditionally simple problem. The easiest example of this would be some thing like Notepad++. When I fire it up it tells me there's an update and if I say "yes" to installing it I can go have a cup of coffee and it is done when I get back.

Toolbox has always sounded interesting but then you have stuff like this:

"Why can’t I update a tool via the Toolbox App? If you are planning to use the Toolbox App, we recommend uninstalling all previously installed JetBrains tools and re-installing them again through the Toolbox App. Your settings will not be affected."

and

"Is there a way to reduce the Toolbox App’s disk space usage? The app keeps a previously installed version of each tool to enable instant rollback. You can delete them to save space: please use Keep only the latest version setting in the app’s settings. Note that you’ll lose the ability to instantly roll back to a previous version, though."

There's more in the FAQ.

I might try it, but it sure feels like using a sledge-hammer to solve a problem that could have been done with a single "Install Update" button for each IDE.

In other words, offer the simple "Notepad++ style" option and if someone wants the entire aircraft carrier solution they can use Toolbox.

In general terms, I go for less complexity and less stuff to setup whenever possible. I love the JetBrains tools and have been a happy user and subscriber almost since they came out, they just lack a nice, simple and friction-free updater, that's all.