I think the bill gates are opposed because there are no laws governing bitcoin and also the legality of bitcoin is still minimal. Bill Gates also understands the risks of bitcoin instability. Maybe that's the reason bill gates oppose bitcoin. But I'm not worried because there are still some who support bitcoin. This is only a matter of dissent. So you don't have to bother thinking about that. That is my opinion.
Bill Gates doesn't like bitcoin because it's anonymous and also understands the risk of bitcoin instability. For this reason, Bill Gates doesn't like bitcoin, but likes blockchain technology that accompanies bitcoin. Even intending to develop the blockchain to progress and improve the efficiency of the company.