You're making an assumption that he didn't feel like China would be a better option for him personally. If he fundamentally disagreed with the direction the US is headed, I wouldn't call it irresponsible at all.

All things considered, the US looks really bad right now internationally. We have vast military power, and our leader is a child elected on a wave of nationalist populism. This has happened before in recent history, and it didn't end well.

He was born in the UK and grew up in Hong Kong and Singapore. That hardly constitutes "growing up in the West"