Windows 10/11 looks almost identical to Windows 7. I really don’t see a major difference.
But even if I accept your premise, I’ll remind you that Windows 7 came out 19 years ago. I didn’t exactly own a 27” 4K monitor in 2009, and a 14” or 16” screen laptop in 2009 would not have been thin and light like it is today. 2009 was like “my bezels are over a half inch wide” era.
The OS is fully scalable as well. You can just make it smaller in a very granular way. Windows 7 wasn’t capable of that.