Because the basic idea of the character now is cool with lot's of possibilities while the basic idea of the new version is boring to me. If you want some essay on my likes and dislikes and how I evaluate what I do and do not like I hate to break it to you but that ain't happening
What I'm trying to point out is that you know practically nothing about the new version. Based on a single line there is no way to determine if it's boring regardless of your likes and dislikes.
Snap judgements based off of little to no information don't lead to good conclusions.
Ok I have played the game so far seen the way the character is now. They then decide to take the part of the character I like and remove it. It doesn't take some great leap of logic to determine if the part of a character someone views as the coolest part is removed it can hurt their enjoyment of a character.
EDIT: The part of the character that has intrigued me throughout early access and I have been excited to see explored more has been removed. What ever the new version is like I don't need to see it to know I will be disappointed with what they took out
Part of my argument is also that this change shouldn't be a surprise. Now I have time to reflect on my disappointment it won't taint my experience as much when I first boot up the release game and find the parts I liked about that character removed right then