He hasn't been, the opposite in fact.
But that's a fantastic deflection away from the worthy criticism that Musk is heaping upon the UK/EU. 
Oh. Why not though?
His business dealings.
This is where #blueanongE gets caught up in their confusion about how some things are different then other things. That some things can be right, and that other things can be right or they can be wrong and worthy of criticism.
For example, it is right and worthy to criticize the crap bags running Great Britain. It is right and worthy to criticize the crap bags that run
other EU states. It is also right and worthy to criticize Musk for his stance on China.
It is also not at all uncommon to have different factions in administrations. For example, we had an entire faction in the Biden Administration that were complete cucks to Iran and were spying for Iran.