Satoshi took careful steps to make sure that the world would look back and observe that bitcoin was launched fairly:
No premine (Satoshi didn’t grant himself any coins)
Gave a 2 month heads up before launching the network (no sudden release and no mining before release)
Coins had no value for 1.5 years so they circulated freely (this cannot even be replicated)
Satoshi never cashed out (unlike every other founder in history and I bet that it never happens again)
Satoshi created bitcoin for the world and he never even cashed out. He did it for us and he didn't even profit from it.
You presented interesting points about Satoshi's conduct regards bitcoin. These are indeed good reasons why an investor should trust bitcoin more than any other crypto currency.
I remembered days ago on the internet there was a statement saying that the end of Satoshi identity's mistery would mean a fall in bitcoin's price. By those news we can see how the identity of the creator behind the currency can affect the market negatively, while anonymity affects it positively or doesn't affect at all. Bitcoin is seen truly as a decentralized currency, while another cryptos aren't, probably because everyone knows the identity behind the currencies, meaning the developer has personal interests Satoshi didn't.