Just because there's currently no way to separate the two financially doesn't mean the complaint is invalid. There are multiple plausible ways for those finances to become untangled.
> just because the owner is rich
Him being just "rich" (7-8 figure threshold) is barely a factor. It's the extreme level and the way he acts.
This is why I mentioned 'reliable'. People love to whine about how extreme they perceive Musk to be, but SpaceX has continued to be as reliable as ever and hasn't shown any of the urges conspiracy theorists love to imagine they will have.
"SpaceX is reliable" and "I don't want Elon Musk to get money" are completely compatible thoughts to hold at the same time.
Complaining about a choice doesn't mean you think it's the wrong choice.
Note that I'm not really concerned with how mcmcmc feels in detail, I'm just commenting on their initial post and your response to it. They weren't objecting to money for services rendered.