As a Briton I agree. It's also why I'm quite sceptical of the concrete benefits of a directly elected House of Lords and the replacement of the monarchy with a presidential system which are popular ideas in some political circles. I'm no fan ideologically of the trappings of a landed gentry and there's plenty of room for heavy reforms there but having a strictly apolitical head of state and a semi-technocratic oversight body has its advantages. Democracy isn't necessarily measured by the amount of government positions which are directly or indirectly elected - there's more nuances than that.
But yes, if you have garbage politicians they will at some point start appointing garbage judges, garbage crown attorneys, etc. and the system breaks down. So, like, get better politicians (by which I really mean become better voters).
Is... that meant to be a bad thing? Yes, judicial branch should not be directly accountable to voters. In fact, as a Canadian, I find the idea of electing judges to be so thoroughly strange that it almost defies belief. Why the hell would you want your judicial branch to be "democratic", as in directly and immediately beholden to the whims of the mob? It should be behind layers of indirection, only generally accountable to the voters, and with a long lag to boot.