For me of course Satoshi Nakamoto matters to the bitcoin community for he is the maker and very well respected entity in this industry.
I worry that if the "real" Satoshi ever emerged, that the community would largely bow to his authority. He deserves a lot of respect, but it's important to recognize also that Bitcoin moved on without him. Many other developers are responsible for taking Satoshi's design and making Bitcoin what it is today. If, for instance, he came back and started arguing for massive blocks like Craig Wright, I think those views need to be debated on their own merits, rather than deferring to his authority.
Aside from the amount of percentage that he holds, he matters for he knows the ins and outs of the system, he knows the strengths and weaknesses of the system
We actually don't know how much he holds. For example, he may have simply destroyed the private keys to much of the early mined coins. Also, he could be dead. His design was groundbreaking, but I think others were better at finding its strengths and weaknesses.