It really is a non-story.
When PPA was first introduced, it was pretty normal to choose where you worked from. Also, if you wanted to use an hour of it to attend your child's assembly, or to get your hair cut or to go to the dentist, that was fine too - you had the same amount of work to do, whether you are doing it on a Tuesday morning, or a Sunday afternoon or a Wednesday night.
Of course, too many HTs no longer trust professionals to manage their own time.
But it is just a gimmicky soundbite. The issue of workload is not being addressed. Anyone who really wants things to change, needs to completely halt OFSTED in it's current form; let teachers teach (and plan and mark) , and get rid of the other nonsense that currently takes up so much time and drains the life from teachers; Build special schools; provide enough funding to properly support the most vulnerable children in our society with skilled, well paid staff, for those who can flourish in mainstream schools; provide pastoral, social, and mental health support for those children that need it; build Social Care resources so that children in desperate situations can get some actual support; in summary, let teacher do the job they want to do - teach!