to avoid mentioning in the Polish press that he was born British and brought up British.
You, linking to a wprawo piece delph? I didn't expect that.
As for the natemat piece, I was hoping there would be more inside information on who he might be and what other connections he really has, but I suppose that would require some hard investigative research. They have pretty much just gone through a timeline of events since he appeared in Poland - what ceremonies/events he has attended, who he has spoken with, who he seems to be spending a lot of time with, who he has attacked etc. As for him being raised in Britain and then joining the Israeli army for some time, this stuff can even be found on his website - he doesn't hide it. jonnydaniels.com/who_we_are
As you mentioned though, there is interestingly nothing on his website about any connection to Poland - yet he keeps mentioning that he is Polish. I suppose many Jews have got a Polish background, so it isn't impossible.
I think the left and right's uncertainty about him is there for different reasons. The left basically don't like him for mingling with PiS and the right. The right feel he has more of an agenda than he is showing in public and don't trust him.
You're damned right, buddy! Poland may be such an example
Are you drawing comparisons between Hitler and PiS [or even Hitler and Trump for that matter?]. Do you believe Poland would really be a better place if it was still run by PO? There's no blame politics in Poland [as Doug suggested], just normal patriotism and protecting the country from false anti-Polish propaganda, whether from abroad or domestic.