The problem with 'sarcasm' like the example in question is that most of the trumpery think that's not sarcasm.

If it's only going to be misconstrued, it's not serving the purpose you think it might.

You have to know that the average Trumpist has no concept of nuance.

WolfEagle isn't wrong to be dismayed at seeing the comment even if he does recognize the supposed 'sarcasm',

Misconstrued as it surely will be by the majority of your audience, it most assuredly will defeat your own purpose in crafting it.

What you call sarcasm only provides affirmation to the average Trumpist.

When 'sarcasm' is self-defeating, it's only going to be an 'in joke' that your intended audience won't ever detect.