Here is the salient point on the Wikipedia page that explains why horses don’t produce 1 HP:
Watt judged that the horse could pull with a force of 180 pounds-force (800 N)
Basically, Watts made up HP to sell his steam engine to mines and likely made up a number to make the new technology seem better.
Some things never change.
Of course. He is only a chatting predator or pedofile.
/s btw. I don’t know anything about the situation