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The list goes on.
The topic has been discussed at length here before. https://news.ycombinator.com/item?id=21675717
Shouldn't be sensitive about people asking "why didn't you do this?" though, or "that reminds me of my own thing that I made back in the stone age". Those are useful and reasonable points, if not made unkindly. Reality is unkind.
We can at least agree we are talking about the latter.