Hew actually said he would and that he wouldn't, https://www.reuters.com/article/uk-factcheck-biden-shutdown-vaccine/fact-check-biden-did-not-say-that-if-elected-he-will-lock-down-the-country-until-everyone-is-vaccinated-against-covid-19-idUSKBN2762TF
“I would be prepared to do whatever it takes to save lives. Because we cannot get the country moving until we control the virus.” When pressed on whether he would shut down the country if scientists advised him to, Biden said, “I would shut it down. I would listen to the scientists.”