Typical politrickian/media rubbish. They confuse making new (often badly written) laws with properly enforcing/applying what is already there. "Yes, Minister" called it "politicians logic."
I don't think it's entered their heads that those who break the law by using any object as a weapon will continue to do so irrespective of the specific applicable law, and those who don't do so will be the ones who suffer. (Although increasingly perhaps, the "law abiding" are becoming less so on occasions when the law is clearly an bottom).
With any luck it won't get parliamentary time (lots of words on media but nothing actually happens) although being in an election year all sorts of strange things could happen.
Hopefully, there will be some "common sense" lobbying. Drafting a law that goes beyond the current provisions but does not outlaw kitchen knives, industrial blades, meat cleavers, garden tools etc won't be practically possible unless applied in a very narrow way.
Already I see the word "Machete" going out of use and sellers describing knives on Etsy as "outdoor tools" to get around selling restrictions.
We live in strange (and sometimes frankly bizarre) times!
GC