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In the end, it would be like only peanuts for him. It's not something he has worked for it anyway. He can buy whatever coin he wanted even the shitcoins if that's what he pleases to do so. I wouldn't call it indirect support to be honest though even if I can recall that Tesla adopted crypto payments in their business.
maybe with the wealth he has now, it seems easy to do anything, if now he wants to sell his bitcoins, it could be giving fud news to have many friends to sell it, so the price becomes cheaper and he can buy it back at a low price. although rich people, but every rich person of course will always try to increase his assets, but I don't know what he thinks, because before he acted outside the minds of many people in general