With the way mining has evolved and continues to evolve outside of what Satoshi had envisioned
Actually it is evolving almost exactly the way Satoshi had envisioned. Have you read the things Satoshi has written?
I feel that we should be fair in our description of what Bitcoin actually is. At least at the moment.
Decentralized is a fair description.
Hopefully changes are made at the protocol level.
This is unlikely.
This should also apply to any altcoins that share a similar model. I don't know if there are altcoins out there that could call themselves truly decentralised, but the ones that are traditionally mined are probably even more centralised than Bitcoin.
As far as I know, all altcoins use some sort of proof-of-"X" system of reaching consensus where weaknesses are introduced if any single entity controls a significant percentage of resource "X".