Because for many people writing code is exactly their job, it isn't a means to an end.

It is like replacing people at the supermarket with self checkouts and expext they still feel fulfilled on their job, replenishing products from the warehouse.

Additionally only optimistics cannot see their job is in jeopardy.

If you deploy 10x faster, than me as business owner need less of you for the same amount of work.

No, the need for work doesn't grow exponentially every year, there is a physical limit to distribute among all people offering delivery capabilities.

Finally its environment impact destroys all the progress that was made in the last years, and brings computers prices back to the 1980's.

But less people to build something means more companies will he able to build something, this math will be interesting in the future. Also there will be a exponentially more stuff to maintain.