As for Bill again I don't see anything where his "came from so called old money" badge would've contributed to his success considerably beyond what an upper middle class family could.
His actions outside of Microsoft also speak greatly to his character and go well beyond the typical SV billionaire or even the "typical" philanthropist.
I think the gates case is unique in terms where you have 2 very accomplished parents both Mary Maxwell Gates and William H. Gates Sr. which were accomplished on their own regardless if they were old money or not.
I still remember the moment when Bill Gates switched from being the "Microsoft guy" (during those times sort of akin to the new Satan) to being the "philanthropist" that he is now. I'd say it's been a very successful bit of public relations for him if this is how you see him now.
Both of his parents worked (and unquestionably very hard) for a living and while lived a comfortable life it wasn't one of some extreme affluence.
His parents is what we would for the most part consider upper middle class or "working rich" it's not like Bills childhood could be a backdrop to a scene in "all the money in the world" or anything similar.
I've also never considered Gates to be a Satan or anything of the sort regardless of Microsoft's practices I've always have had an admiration of him as well as many other successful people.
Bill has a generational qualifier for example and look at his family background and where he went to school.
If something is neither necessary nor even close to sufficient for success, how can you dismiss someone's success as due to it?
I don't think it's being dismissed as due to it, so much as it's acknowledging the near-necessity of it to attain success.
Gates went to a high school where the parents pooled money in order to buy mainframe time for their kids. Gates was seeing a therapist, which helped him focus and mature faster. He had the support to start a fairly wild venture with a friend.
Gates is incredibly intelligent, focused, disciplined, and was in the right place at the right time.
If I were in his shoes, I wouldn't have succeeded. Not because I lacked the resources, but because I'd have found the idea of writing a BASIC interpreter to be boring and wouldn't have seen it through. But I also probably wouldn't have had access to the technology necessary in the first place...