The biggest difficulty has been the Covid policies put into place, both inside and outside hospitals. It's difficult, time-consuming, and stressful to follow those policies (both parents work for the NHS, btw), not to mention the number of staff who had to isolate. The social services that would receive many patients after their hospital stay are also overwhelmed/falling apart (probably for similar reasons), so many patients cannot be discharged.
I'll say it again - it all makes sense, if avoiding Covid is the absolute number 1 priority, and if "letting it rip" would have made things worse than they are now.