Are you saying Craig Wright really is Satoshi - isn't he the cliff edge for Bitcoin.

Re: better alternatives. You need to define the purpose. Bitcoin wasn't designed to be a volume payment service for everyday payments. The limits built into it prevent that. However is is a great store of wealth, and it has a great wealth exchange facility. It also allows for supplementary services to exploit this, and the Lightning network in one such service. One of the crypto analysis guys made an interesting point. It would be possible for one Bitcoin to form the asset base for every payment in the world. You would just need to subdivide Satoshis by a few more decimal points. Some of the alternative currencies are being created for specific financial functions, and they may be better and faster for those purposes. Bitcoin is still the best general purpose tool, and nothing else comes close.