Write a few Helm charts and you'll understand why people want to stop using it. `nindent` will become a curse word in your vocabulary. It's a fine tool at the user level, but the DX is an atrocity.
I mean, I have written a few (like 5-10?) and I don't understand either. I find that Helm is quite a nice tool which does its job very well.
What are you planning on moving to ?