How anyone who Say Can proof Bitcoin is not ponzi?
There is More proof and evidence that it is ponzi.
I Don't mind If its ponzi but i Don't want to exit too late but not too early so When is best time to exit?
How can bitcoin be ponzi? LOL!

It has a limited supply of coins, and no one promises to make any profit... Here are all the new DeFi projects that can be classified as ponzi, but not as bitcoin!
It looks like a ponzi because it is not in a mainstream and people still think that bitcoin is a scam in a way that this asset do not have the potential to become profitable. There are a lot of proof that bitcoin is the future currency, it reaches its ATH in 2017-2018 which is really historical for bitcoin investors. Even if it is a decentralized asset, it should be in the mainstream as soon as possible, but the adoption is hard to achieve due to that ponzi mindset they are in. Bitcoin is worth it to invest, you just need to keep yourself away from those scams and hacks.