Reform is: squeezing even more hot air into the church
It's rubbish, of course. Or, more accurately, Reform posturing as part of the continuing campaign to bend the Communion in one direction or another. No accident then that the report is in the Daily Telegraph.
But given that many of the Reform congregations have more or less excluded themselves from the life of the CofE anyway, will it make much difference? Many have wholly or partly stopped paying their quota so it wouldn't even make much difference to Diocesan budgets.
It's clearly the North American let's have a Province to suit ourselves model being essayed in the UK. But if 3,000 is the top estimate then you might need a microscope to find a conservative Province that covered the whole of Europe.
The trickier situation would be if the congregations don't leave. They would carry on occupying parish churches, clergy drawing stipends and pensions as now, but merely march to the Foca drum. Just like now. I suspect that only if there were to be some explicit schismatic act (e.g. inviting a GAFCON bishop to conduct a confirmation, ordaining a person on their own cognizance, or making a statement of formal allegiance in contravention of the Oath of Obedience) could any action be taken against them.
Not so much a new province as old parasites.