Exactly my experience.

Literally every task/feature now involves me learning or thinking through an architecture. I enjoy it because that was always my favorite part pre ai thinking through and designing the system.

It is actually more mentally taxing I think because now all I do is work through complex architectures and thr fact that code comes near instant means the scale and volume at designing the architecture is 10x now.

Top models are so good at not messing up code whenever there's lots of bugs it actually means my design and testing methodology was poor which is also a much harder problem.