[KMnO4]

I’m not sure if you’re being serious or not. I’ve never met you and tone isn’t conveyed over text.

I’m assuming you’re joking, but maybe that’s exactly why we need explicit sarcasm demarcation.

[glenstein]

Exactly right, and what I would add is that this is a Poe's Law thing.

I might even offer a corollary to that law, which is that the more unclear a statement is, the more inscrutable a it's intent, the more likely the original author will insist that it was 'obvious' sarcasm.