The RF did not cover themselves with glory during Covid. They did very little during lockdown, didn't seem to take Covid seriously, didn't model good mask wearing, repeatedly broke Covid rules, and generally did the bare minimum.
Charles was criticised by the press over his behaviour when he first had Covid because he moved location twice (from Clarence House to Highgrove, then flying from Highgrove to Scotland at a time when Nicola Sturgeon was on TV explicitly saying "Do Not travel to second homes in Scotland") while actively symptomatic after having dinner with someone who tested positive, plus there was press criticism over him and Camilla "queue jumping" covid tests at a time when even some NHS workers weren't getting access to tests. The second time he had Covid there were concerns about him being around the Queen while infected.
Back in 2020 Will and Kate were widely criticised for posting pictures to their Instagram of them doing a screening and photoshoot with David Attenborough (with no masks, and obviously ignoring both the rule of 6 and social distance rules that were in place at the time), basically endangering a 94 year old national treasure just for a photo op.
It came out later that Prince William had actively lied when he stated that he did not have Covid when he actually did, and several royal reporters, even those who are usually obsequious, tweeted or wrote about what a misstep it was and how much anger and loss of goodwill he'd caused in the press.
All of them were frequently photographed attending events without masks, and often were clearly ignoring social distance guidelines. Will and Kate even visited a hospital without masks! Again this led to criticism in the press.
Will and Kate and Edward and Sophie got bollocked in the press for breaking Covid rules by attending some show as a group of 9 when the rule of 6 was still in force.
Having more moral fibre than Boris Johnson is a bar so low an ant couldn't limbo under it.