Autodesk Fusion 360 does this too. It's "installer" downloads the multi-GB package for it + installs the whole thing into a local user folder which the OS has no knowledge of.

Apparently they do this so they can control when it's updated, without having to go through any OS controls.

Needless to say, when people "delete" it they often are just deleting a stub rather than the actual multi-GB file set. :(