Examples:
Your post: "What if God did this weird thing…
Their reply: “God doesn’t exist so this question is nonsense.”
Your post: “In the year 2075 everyone gets assigned jobs based on…”
Their reply: “Dude, with climate change there will be no us or jobs to do in 2075.”
It’s the Internet. People are trying to have fun and talk about wacky shit and escape from serious matters. Can’t you either refrain from commenting or just play along?
You need to make it clear it’s a hypothetical though. In your examples, it wasn’t clear.
deleted by creator
Sorry, I didn’t make myself clear. It was clear it was a hypothetical question, it wasn’t clear - to refer to only the first example at the moment - they were including God’s existence to be part of that hypothetical. If I said ‘What if you met Donald Trump?’ I wouldn’t be claiming that Trump only exists in hypothetical scenarios, just that you meeting him only exists in such scenarios. Likewise in the first example, it is not clear that they are calling God’s actual existence into question, but just your chance of meeting them.
As for the second example, it’s the same thing. They are bundling a premise into the hypothetical, a premise (that the world will have humans in 50 years) that is not clearly hypothetical, and one that the commenter is thus permitted to disagree with in the comments.
I hope I have made myself clear, as it would be hypothetical if I didn’t.