It is amazing the lengths some people will go to avoid admitting they made a mistake.
You went from rehashing a poorly researched article from The Athletic (which you also then misinterpreted) to just making things up. On domestic football alone for a player with an EU passport, yes, there are some more restrictions now, but they still do not mean the whole market (including lower league) are closed off like you have said. When you include international appearances (FIFA seeding is weighted, not absolute, check that too), or the origin of a players passport (one of which apply to both said players Pukki and Bunedia), then they are not confined to the same restraints as someone from Kickers Offenbach would be. Appearances also count for a lot, as it is a staggered system, with domestic and international pointing combined (yes I know you are just panicking and quick searching this too).
You made an angry outburst about brexit and now you are just making yourself look even sillier by trying to get acute, which would be a half-sensible save if your facts were remotely correct. Yes, we are probably looking at a player from a higher European league, but why wouldn't we be? We are an established Championship club now. Transfer policy will not massively be changing because we can't suddenly sign someone from the Polish fourth division.