Decentralization is a security and censorship-resistant feature of Bitcoin. All transactions must go through a miner, but the only way to mine a block is by solving a SHA256 hash in competition with tens of thousands of other miners also trying to solve for the hash all around the world.
There is no way of saying 1% owns 92% (after all, I can churn out a million addresses used purely for one-off transactions, if desired, that's totally acceptable, wallets are practically free to produce). But it wouldn't matter if it did, because distribution of Bitcoin does not affect its security or censorship resistant properties. All transactions get the same amount of security. All holders are equal in terms of protection provided by the network.
Concentration of ownership of any capital asset is going to follow a Pareto distribution. That is not unique to Bitcoin... it's true of everything from stamps to stocks. Bitcoin never made the claim to some sort of idealistic theoretical "even" distribution as if that would be fair, but I digress... Bitcoin is also not the end all be all of crypto assets, and plenty of additional capital value has been distributed among the long tail of crypto assets that have cropped up since (over 60% of crypto's market cap is among other crypto assets).
Mining pools are not centralized entities. They are loose organizations that miners join to even out the yield on their mining equipment. A miner can fluidly leave and re-join a different pool at will. The pool's sole function is to smooth out yield. If a pool fails to do that, it loses its miners. It's not some central entity that can command the miners in it to 51% attack the network. That's not how pools work.
But even if they did, it would be painfully obvious that it was happening, and the Bitcoin community would mount a response, which may include a hard fork if desired.
I am more involved in the Ethereum community than Bitcoin. The lure is that I can borrow and send six figures worth of crypto in 2 minutes, and deploy it to a smart contract multisig and create an on-chain organization in a single afternoon that is used to deploy capital for anything from charitable fundraising to art commissions and auctions to online gaming production to startup operations. I can coordinate across jurisdictions frictionlessly. I can retain my assets when moving across borders. I can retain true ownership and custody of my funds without any central parties. I can earn yield on my funds by lending it out to on-chain options markets. I can fund any one I want on the internet without Paypal's permission or blessing. I can move to a third world country and still retain all of these capabilities.
It's not going anywhere, it's hugely valuable. It continues to get more powerful and more user-friendly.