MDI
I agree that there is information out there but following the link that you posted as an example led me to a bunch of sites where I found only one loading for only one cast bullet. Granted, I did not visit them all but probably will as time goes by. And most standard manuals do not cover many cast loads and when they do, it is only with select powders, therefore it is hard to ignore what isn't there to begin with.
You have the misconception that when someone asks a question, the answers are taken as some form of manna from heaven that needs to be followed without any further thought. The fact is that most of us who post questions probably have already done a bit of legwork and ask here to get a feel for what others are doing and melt the information down and make our own, thought out decisions.
Asking questions does not always indicate a lack of thought process or ambition.

Like you, I have developed loads for my own guns based upon experience, manuals, word of mouth and yes, the forums.