Because Linux had a choice of desktop environments to try out. What a playground.
My first peek was with Wubi. >2008 ish? Then Knoppix had a live boot. Then all the other live boots followed. Very important easy first step.
I’m now on Plasma, tweaked to suit me.
Constructive criticism is good. I hope you reported bugs. Just saying you hate it, or it sucks, says more about you than the software.