You’re right in that a Reform government would be a very good thing for Britain. But working against Reform is Britain’s parliamentary system.
Reform would need not just a plurality in Parliament to take over, but a majority. Would the dopey Tories unite with Reform to get that majority, or would they side with Labour?
A similar situation is occurring in Germany. The AfD party is (thankfully) on the rise. But every other party has said they will not unite with the AfD.
Tories are already dead