Though I'm not disagreeing with you, there are issues caused by brexit, I've had personally issues with importing goods and the minefield that is customs and the delays they cause, however most companies are on top of this now, the only issue we have is with TNT, any other imports and exports by other companies either independent or national/international, are now dealt with as swiftly as they were before Brexit (from personal experience). some issues have been compounded by brexit, but exactly what percentage is caused by brexit and what's caused by the pandemic is not yet 100% clear, it appears Europe is suffering from a HGV driver shortages aswell, some report food shortages, let's not pretend that the EU doesn't have issues of their own, and some of these issues we would still be experiencing whether brexit happened or not.
Personally the whole world seems to be an absolute sh&t show at the moment. Even new Zealand, shutting the country down again because of 1 or 2 cases. I understand as to why, but the problem is this is not going to go away, and they can't possibly keep shutting the country down forever surely?