Can you quantify how the UX is an improvement? For me, the death of having a vertical taskbar makes an ultrawide display annoying. The centred-by-default icons

Can you quantify how the UX is an improvement? For me, the death of having a vertical taskbar makes an ultrawide display annoying. The centred-by-default icons of the taskbar kill muscle memory because opening applications moves icons along. Just seems an absurd thing. I could go on.