You can't stop them entering the country but you can slow them down so that you can tweak your vaccines to protect against any new variants, that's all it takes. Try to be happy.
Hotel quarantine is actually likely to be relaxed once the scientists discover that the Oxford AZ and Pfizer vaccines also protect against the new SA and Brazilian variants.
probably Easter is more likely. Moderna and Astra Zeneca vaccines will be approved and rolled out very soon. Some of these flights bans are not very long anyway - I think one is imposed for just 48 hours.