I think you got it wrong.

First, the Jamie Dimon attack in 2017 was done not to attack bitcoin per se, but to cause panic, I mean he wanted to bring the price down because they're secretly buying tons of bitcoin during the dip.

https://news.bitcoin.com/after-the-boss-calls-bitcoin-a-fraud-jp-morgan-buys-the-dip/

And then they launches their own tokens, we can't call it crypto though because its for their private used and I'm sure they won't offer it to investors. Instead they will used it around their banks to help lessens the fees and the transaction time for their clients.

i think you are confused about a meme.
what happened was starting from 2017 or maybe before he started talking negative about bitcoin and at some point he went as far as calling it "fraud" and he has been doing the same ever since without changing his stance. but at some point he also started praising the "technology" and build it up to their shitcoin which they recently revealed.