First he tries to deny Covid, and the response to it, caused economic problems by claiming it was used as a scapegoat for Brexit. So immediately you know he's not interested in reality but going to spout guano by the truckload.
Change causes disruption, so one would expect a blip in trade with an intransigent EU who are more interested in punishing the leaver that being reasonable; but even knowing this, the effect of the pandemic and war, which swamps any blip, is dismissed, as otherwise it would lose the opportunity to try to do down Brexit, were one to be fair.
Making a daft strawman video of someone looking unbalanced and claiming all is ok because we can trade with the whole world, is poor argument. Of course we are free to trade with the world, and that is picking up. It does not negate the points about other, more effecting economic issues noted above.
Plus being obsessed with trade/economics is probably what got us into the position of being a vassal state to the EU Commission in the first place. Surely it is blatantly clear to all by now that the EU is NOT just a trading block, it comes with loss of control of one's own nation and acceptance of an unelected elite demanding you do as you are told, and which suits their interests not you nation's. Intelligent politicians should know everything has a priority and their relative positions change over time. A small blip for a while on the economic front in order to become an independent nation again is worth that price many many times over.
And where is this evidence that trade is now all dandy with the rest of the world but done nothing in the UK ? Notablely shown with a sleeping actor, presumably to try to convince the gullible where there is no real evidence to really show.
And this is only a few minutes into your recommended video.
As for the chart, it clearly shows we are starting to pick up again, which looks good for a nation proud enough to help an invaded one as much as we have. Recall also that this is against a background of animosity from the EU. It's interesting that the chart creator put all economy values together just prior to the pandemic rather than show a true comparison of economic strength, one might think they were trying to manipulate something, or is that too cynical: but even so you will also notice that the pandemic fall effected all much the same and it's simply a slower recovery for us who are in the process of establishing an improved economic situation.
I don't think it is worth listening/watching further; clearly while in transition from an unacceptable situation as an insignificant area of an EU empire, to a free nation there will be a period where the economy is slower to recover but it is beyond the Pale to try to ignore that in order to claim the activity of Brexit was a bad idea. It is self evident to the majority of the UK that it was a necessity which is why they voted for it. And this sort of propaganda video trying to push Newspeak, where up is the new down, and north the new south, cuts no ice at all.