Why not everyone using Claude Code?

I've been using Copilot on VSC, for the last 1-2 years mainly because I get a free subscription. It has been great and helps a lot with mundane boilerplate code.

However just recently I tried Claude Code and I managed to keep releasing 2-3 features per day the past week, while normally it would be 2-3 features per week at best.

How come not everyone is using it? I'm just amazed on how much faster it is. I just tell it "write a test to cover the case X and then implement the serializer", and voila!

Note this is a huge monorepo personal project that I've maintained for the last few years (so there's very little dirt).