How feasible are Rolls-Royce and easyJet's hydrogen engines for planes?

Rolls-Royce and easyJet said that they have successfully run an aircraft engine using green hydrogen created by wind and tidal power

Rolls-Royce and EasyJet, in a press release on Monday, November 28, said that they have successfully run an aircraft engine on hydrogen. The company said it was the first to run a "modern aero engine" on hydrogen. Is this a significant step forward in reducing carbon emissions from air travel? Let's find out:

 

The company, in its statement, explained that it used green