From infinite supply, their team tried to use Burn mechanism to make it deflationary but still with infinite total supply.
It may just be me but I see this as another reason why ethereum is such a big scam.
You see, ETH is not supposed to be deflationary by design. It must have an unlimited supply because unlike bitcoin that is money, the ether is fuel. ETH is supposed to be used for smart contract fuel which mandates having unlimited supply and a inflationary nature.
But because the creators of ETH see it as a way to make more money and to pump and dump the project, every now and then they come up with something to create hype and pump their shitcoin.
Like Flippening that you mentioned. By design ETH is not even in the same category as BTC to replace it! Or this one where they try to become more similar to bitcoin (become deflationary) by adding burn mechanism.