It’s nonsense. The video is full of inaccuracies. There were never 3000 Scorpions built for the British Army, even if you include Abbots which this video also seems to think is a Scorpion. Where are they going to get them from?
Spartans and Sultans have been sold off in large numbers over the last few years so there were plenty about. The Ukrainians only wanted diesels. There were around 300 Scorpions built for the British Army. Of these about 30 were converted to diesel which were used at BATUS and sold off about 10 years ago, now dispersed around the world. 136 Scorpions became Sabres, the rest were sold off/scrapped in the early 90s.
Its possible they could be from another country eg Jordan, but they won’t be buying a fleet of British Scorpions.