[Liz]

......why (should Simon) waste punches on an opponent who is defeating himself? .......

I said it before, now I'll say it again:

When your opponent is efficiently and effectively committing
political suicide, it's considered bad form to lend him a hand.

[Grampa Dave]

It is considered very bad form to loan him a stool to stand on and new rope with a hangman's noose. So you stand back in the shade, order some popcorn and beer and watch his self destruction.