
Neither, it's the fact that the command key is smaller than on any Apple keyboard and the start key is smaller than on most Windows keyboards, so your fingers will miss them, whichever you're used to.
While this might be not beautiful, it still is functional and works well on different OS. The real problem with these keyboards is the ignorance of the devs regarding the FN key. From the Logitech FAQ:
Logitech keyboards do not send the Fn/Globe key keycode in a manner that is compatible with Apple's specific shortcuts. As a result, certain Apple functions, such as window tiling and other shortcuts reliant on the Fn/Globe key, are not supported by our keyboards.
https://support.logi.com/hc/en-gb/articles/4404543933719-FAQ-POP-Keys