Taxing Mcdonalds taxes the imagination

Click the title for the news item , above
Yes its NOT April 1, but Scotland has apparently called for taxing junk food !
The reason : to cut down on mortality, fair enough.
But some MP to actually come out and say it should be taxed beggars the imagination.
I suppose it could *just* be possible if you taxed fat, maybe, but salmon is quite fatty - that margerine spread looks really expensive- Cheese sales would fall to the basement or below probably .
Another way would be to define junk food as any processed goodies. Your frozen chicken breast then becomes more expensive than venison ?
It is totally risible that people that are supposed to represent us can actually say things like that- who knows if they verbally messed up with something important.
Oh they did that about Iraq, I forgot.