That's a non sequitur. Creating long-term professional politicians is not going to create legislators competent in the various domains they legislate on. It's going to create politicians competent at being elected long term, whatever the means.
I don't know what the solution is for California, but I don't think it's that.
Overall, if the objective was to have a non-identifying age flag in operating systems, this isn't the end of the world (though I would have preferred enabling other things I've mentioned here in the past like opening up OSes). If there were younger people in the legislature that tried to understand this better than octogenarians, I think term limits are working fine.
Hopefully parents can use the parental control tools built around this non-identifying flag for some good.