You don’t see much organ meats in the Netherlands and the UK much because they are shipped to France where the price is high (and being a part of the EU, the isn’t any extra taxes for that). It’s market choices, not dietary, combined with they were never a huge desire for them there.

You literally said it's high prices in France driving exports from The Netherlands and Britain hence as you literally said the market drives the diet

because the Brits and Dutch are not eating that stuff the prices are lower in Britain and The Netherlands than in France (were they do eat that stuff) so it mostly gets shipped to France

I literally said it's dietary habits driving the Market, the very opposite. It's extraordinary that you think I "repeated what you said" unless you're just counting words, rather than reading the actual sentences.

Your Market-driven Dietary Habits theory is wholly inconsistent with the situation of Portugal since those French prices you claimed were so high they drove exports from The Netherlands and Britain (the latter not even a Single Market member) changing their local dietary habits would definitely cause those products to be exported from Portugal (were people have lower purchasing power and prices for food are definitely lower than France) also, also changing dietary habits in Portugal, which has not happened.

Your vague claims of "local market" are grounded on nothing but wishful thinking and ignorance: Portugal is part of the Single Market and very close to France, a situation than has no comparison at all with Asia - it literally takes less than a day to ship something by truck from anywhere in Portugal to anywhere in France and it doesn't even have to be subject to any border controls or phytosanitary checks as meat products coming from Britain would - post-Brexit it's literally easier to export animal products to France from Portugal than from Britain even though the distance as the crow flies is less for the latter.

If Polish beef can be found in Portuguese supermarkets then chicken giblets would definitely make their way to France if prices were high enough there compared to Portugal to justify the 1000 or so miles of hauling by refrigerated truck, and yet one can find them along with all kinds of animal innards in supermarkets and butchers in Portugal, even in those outside the larger cities were prices are lower.

In some cases (such as for example Cow and Pig liver) those things aren't even cheaper than good quality meat cuts in Portugal, and yet people still buy them hence butchers and supermarkets still stock them.