The immigration policies of the UK are very much not representative of other European countries.

That's not my point, you don't see UK under the microscope. Just seems to be another case of "US bad/Europe good".

UK is not in Schengen zone - so it is not "Europe" - even EU citizens go through customs when entering UK (unlike within Schengen zone).

That's not what I'm getting at, I'm not debating Europe vs "Europe". It's when a Europe area country does something, everyone seems to give them a pass. When the US does something similar, it's viewed with a different perspective.

Which country in Europe has has policies affecting 300M+ people (domestic) and eagerly exports it's policies to other countries?

Your point is not valid. Try reading the UK press, like The Guardian and you'll see that's not the case.