I'm not a monero folk and think it has no real world application outside of criminal dealings.
Monero is being used as a currency though which is relevant because bitcoin used to be used as a currency too before the first bubble/speculators got a hold of it. It's critical to any conversation with claims about bitcoin being a great currency (it's not)
I am of an opinion that deflationary crypto (like Bitcoin) can not be used as currency. It should absolutely be used as a store of value (kind of like gold) and as a way to transfer value.
ETH is not deflationary and it is a good candidate to be used as currency.
The characteristics that make Bitcoin unsuitable as a currency right now isn't is deflationary printing, it's that it's unregulated, uncontrolled, and subject to tragedy of the commons (as is seen with the multiple rejected block size increases).
APY on stacking won't be as good as today. I am not sure everyone will stake once ETH2 rewards will be around 1-2%.
ETH2 won't be deflationary because such things is nearly impossible in a PoS network. You need issuance to rewards validators. It can't be network fees because if network fees are high, the network is doom to fail.
Monero is being used as a currency though which is relevant because bitcoin used to be used as a currency too before the first bubble/speculators got a hold of it. It's critical to any conversation with claims about bitcoin being a great currency (it's not)