Earlier quoted context omitted.
Shadowsocks does work against MITM attacks by my US ISP Comcast though. It is great software.
What "MITM attacks" are you talking about?
Comcast is the only non-56k ISP available in my area still in 2024. So I use them... but I also have to make sure to protect myself from their attacks. If I did what they're doing I'd go to prison. But some types of legal persons have more rights than human persons.