I can't speak directly on this, as I've never been anywhere near the UK, but I get the impression Starmer may actually be uniting both sides in their hatred of him, which is rather remarkable in and of itself.
But yes, the government, at this point, has directly accused anyone criticizing the law of being 1. Pedophiles (sorry, "Paedophiles"), 2. Being the equivalent of Jimmy Savile (ie paedophiles) and 3. Wanting children to die. It's the most cliche nonsense ever.