100% bull crapThe whole program has been a case of relying on luck at every point and still is, as we don't know whether the extra delay between doses can allow a dangerous variant to develop.
For that reason the numbers half injected which simply increases the number and hence the probability of that happening rather destroys the glamour of the numbers game however attractive that seems.
And frankly we have left the EU
What they do is no longer something we have any control over
And frankly a bad idea times 60 million remains a bad idea.