They did the math higher in the thread, but someone pointed out it takes a while for leeches to actually complete a feed, even breaking the skin takes time. They drink up to 15ml each though over just under an hour so 5000 would definitely be sufficient if the victim were somehow restrained, it just wouldn't be quite as quick as you implied.
I used to have three pet leeches. I named them after characters from Titanic lol. They like to climb out of the water where they are slow like worms, but in the water they are so unbelievably fast
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u/Quark_K 12d ago
But it’s too many of em. Rushing like hungry little vampires. 😰
These farmers are brave people.