None that I can remember upon reading some of his posts and interactions with other notable figures in bitcoin. From the looks of it, Satoshi seemed to be that anti-government guy that wants things to stay clear of government intervention and control that's why he created bitcoin. Also, his views are mainly crypto-anarchism, so that per se explicitly states that he will never ever support taxation in any way or form.
I did not also remember that I saw any taxation in bitcoin came from Satoshi Nakamoto. In fact, I think he does not want us to have negotiations against government since he want decentralisation and transparency among people. Well, we already paying indirect taxes in cryptocurrency. We just don't see it because it is in terms of satoshi only. Just like a fee in withdrawals or transferring btc to other wallet.
Of course, I'm sure Satoshi's idea in making bitcoin is because he wants to avoid all the rules and regulations that apply from the government, thats why he makes crypto anonymous and decentralized, of course he is very sad now when see there is a tax that is applied to its users