If you studied the share price charts (as I do as a retail investor), you'd soon realise that that travel company share prices are always forward-facing and aligned with community sentiment (and COVID-19 optimism). Their share prices may be viewed as undervalued and some financial gains to be made in the short term.
No level of government has a crystal ball that will tell them the state of affairs in 1, 3 and 6 months' time. If there were significant COVID infection flare ups (I doubt it), further restrictions will be brought back in, significantly setting back the economy and travel. Why would I think this? I work in the government health sector very close to COVID policy...
Move on. No news here.