Here's a screenshot from OS X from a while back:
https://i2.wp.com/512pixels.net/wp-content/uploads/2018/08/1...
Looks amateur and dated right? The thing is, 15 years ago people like you shat all over linux because it didn't look shiny and pretty like OS X. 15 years ago that OS X screenshot was the pinnacle of elegance and polish. If your UI didn't look like that, you were amateur and dated and janky. What Linux desktops needed was shiny buttons and genie effects to be taken seriously.
Now that there are a bunch of perfectly usable linux desktops you need to move the goalposts again because it doesn't meet "common user standards". Meanwhile, you could put a "common user" in front of OS X 10.1 or windows XP and they would get along just fine, just like they did 15 years ago.