I agree.
You could delete a million metronome files and even then, the space reclaimed is pretty negligible.
If storage space is at such a premium on your system, your best bet is to consider upgrading your current hard drive setup.
I assume it's your SSD that's concerning you.
There are quite a few things to look at to reclaim serious space.
For instance, where is your Cakewalk Content folder? Sometimes this gets installed by default to your C drive, likewise with Dim Pro & Rapture libraries.
If this is the case, use the mklink command in a DOS shell (type cmd in the start menu dialog box)
Something like mklink /j "C:\Cakewalk Conent" "E:\Cakewalk Content" would work