It's still possible to learn new tech at that age. I'm in that age bracket and I'm using React and GraphQL and AWS and Terraform and Docker along with the young consultants. Didn't take that long to pick it up enough to be useful either. I probably won't be the resident expert anytime soon (nor am I quite so driven to become an expert in that tech quickly, like I might have done when I was younger), but I'm still building websites with them.

My prior experience with other tech stacks helped me pick things up more easily too, because I know what subjects I should be googling to get the information I need, and a lot of it is basically the same concept, but with different syntax.