1. It has No Valid Source,But I See It A Lot Of Time,On A Lot Of Article,But
A lie told often enough becomes the truth. Vladimir Lenin
let's say it is 1 in the morning, if i tell you 10 million times it is daylight outside, does that make it true?
1. this is the one i knew about.
2. this is not a hard fork! this is an invalid block which then other miners build on and separated themselves from the main chain effectively creating an orphaned chain.
3. you still can not categorize any of the altcoins created out of bitcoin under "bitcoin hard forks". just because some website lists them or they are created out of bitcoin you can't say bitcoin had X number of forks. the correct statement is "X number of altcoins were created using bitcoin code and its blockchain history"
so still there is only 1 hard fork for bitcoin so far.