Your comment starts with a disingenuous sentence, and continues to show a level of bitterness I've seen before in people who believe themselves to be more knowledgeable/experienced than their surroundings (or they actually are), but never got a chance (or so they believe).

I didn't claim to know everything there is to know about statistics and research in general, but I think I know enough to tell that this is not a study, but a marketing campaign for whatever this usehaystack thing is.

> First, they should have tried to poll around 400 people (and perhaps they did!),

If you had read the article, you would have known that that's not what they did.

> By typical polling standards (95% confidence interval, random sample from filtered population), we expect that 77-89% of UK software developers are actually burnt out. That is still three out of every four people in the industry!

Do I understand correctly that you've worked on this? That certainly explains the hostility, but nevertheless.

> we expect that 77-89% of UK software developers are actually burnt out.

That's not what the link/study says.

> That is still three out of every four people in the industry!

This is absolutely wrong, without a shred of a doubt.

I recommend that you read: How to lie with Statistics by Darrell Huff.