I think these are good points from dga and you, but I think the role of mining is being downplayed. Those who are in Crypto these days have complete lack of respect for an equitable Proof of Work and how important it is in the perceived value of a crypto currency. Bitcoin mining centralization is a serious problem that everyone should be criticizing, learning from and adapting to make it viable and useful for the common denominator. That is why Bitcoin is Proof of Work and not some random distribution through stakes or shares.
Look at LTC. The #1 reason it is failing or on a road to failure is its acceptance and adoption of mining centralization. Everything else is just a by-product of this phenomena, even the use-case debate is an offshoot of this.
PoW centralization and discrepancies will be reflected in a coin's perceived value and economies. It is a serious cancer. Getting away with it will not be duplicable like Bitcoin. It is basic human psychology.
Putting so much emphasis on mining is unnecessary to the long-term usefulness of a coin.
Yes, mining is important because that's how crypto ensure a "fair" distribution but this becomes less and less important as time goes on.
Almost all coins have diminishing coin emissions, either in the form of block halving, or the continuous decreasing award per block like XMR but eventually, all mining stops creating new coins and you are left mining the scraps of TX.
This means mining becomes less and less dominant as time goes on and the focus should be placed on the value such network has on facilitating transfer of value or storage of wealth.
Ideally for a miner, they would be able to mine forever, so you either want a coin with unending emission or you jump onto the next pump and dump, which XMR is neither of these.
I think it is valid to make a slim distinction between the literal process of mining (securing the network, processing transactions, decentralization, etc.) and the distribution of mining
rewards. The latter exists to incentivize the former. If a coin is not effectively delivering on the former, or is anticipated to fail to deliver in the future, then the something about the latter may be partially to blame, or the very concept of what you call "bitcoin proof of work" maybe flawed. It also may be valid to claim that mining rewards cost too much relative to the value of the activities they incentivize (though compared to what?)
Alternatives such as proof-of-stake and various other methods of distributed global consensus attempt to address this, although none has convincingly and compellingly delivered a working and widely trusted solution.