“Product market fit” is a silly term for what it wants to describe
wor.do
wor.do
And Naval's insight there is a short version of all the things people say: scratch your own itch, dog food your product, etc. etc.
A lot of these things people say have insight that you can gather but you have to have some commonality. Their words are lossy compression of an idea, and it will only make sense if you're the right decompressor.
In any case, making fun of that stuff gains you very little. To the ones who have the appropriate decompressor you look like a fool. To the other ones who don't have the appropriate decompressor, they think you're being obvious. To the ones who have the compressor appropriate to you, the mockery doesn't signal that.
I suppose it does provide personal amusement, though. So there's that.
"Product market fit" clearly means: there is a market that closely fits your product.
The consequences of that might be the extreme growth etc. When people make the flippant remarks about product-market fit causing you to want to die, they're just making the logical leap from a market existing, to high demand.
It's not that complicated. Nothing needs to change.
For there to be PMF, the product and the market must at the very least have found each other. Otherwise it's just a cool product that no one knows about.
What if I'm building a product for a niche market?