As on online client, selecting the kingdom can be more comfortable than "just random" or 'select each card yourself".
The other thing is that it's not the case that nobody ever thought about equalizing starting splits before and it's just a case of "not implemented because the idea never came up". The idea comes up relatevely often, and as I said, is strongly disliked for such a place like this online game where many people come together and they should be on "equal footing".
I understand that you are frustrated a sensible rule is not implemented. But the cost of adding house rules also becomes that this becomes more and more complicated the more potential house rules there are.