Yes, they are an issue. The idea is to make them independent from future career things etc. and the rule is from a time where people didn't get as old as these days. This makes them independent from the politics of the day.

I think Germany got that better: here we have a 12 year term (thus a single government can't easily swap them out - a learning from the time of 1933) and a max age of 68 (for whatever reason that was picked)