The difference between the two is time. Lockdown has an exit strategy, they could be very cautious implementing it but it will be lifted. A defacto International travel ban justified by keeping variants out doesn't have an exit strategy. It would be equally justified in summer 2026 as summer 2021. Many millions of people have family overseas and businesses require some travel too. I suspect its been leaked to the Telegraph to test the reaction - again. Unfortunately most people won't think it through and think it would only last a few months, when in reality the justification will be around indefinitely because the virus won't stop mutating.
However in terms of lockdown exit you get the options as follows:
1) set a date to ease restrictions then suddenly...
2) restrictions (sorry goalposts moved again)
3) exit? What exit? - not one in both UK or Scottish Governments have set a date for this repeatedly
I see us in Scotland been told not to book foreign holidays until next year ... when next year I hear you ask? 2022 but no date given! Oh pray tell we get to that point then moved again?
Point is either they have a clue or they don’t, but still it’s not a conspiracy though, I’m passed thinking this is all about a virus and it’s about control but heck what do I know? I just know something isn’t adding up and the longer this goes on more questions are being raised with little answers