Because of injustice that happened to Holmes (mostly because she is a woman; man promising all kind of crap never delivering have been given pass many times before - see Musk track record for reference), nobody is going to touch blood testing for a very long time. Hence 15 years.

There is a difference between promising all sorts of stuff and making claims about what is already fact. Holmes ran afoul of the latter. Her claim was not that the machines will work. She could have freely made that claim. She fraudulently claimed that the machines did work.

She didn't suffer injustice for being a woman.

She received justice for being a charlatan.

I can only guess you aren't actually familiar with Holmes' claims.