Whatever Bitcoiners want, exchanges really don't care — and separating decentralized and non-decentralized would just add unnecessary clutter on their side.
Decentralization is the reason cryptocurrencies were invented after all. That's the point for me, and the reason why I think action should be taken. Centralized online currencies did exist up to 15 years before.
What the exchanges/ranking sites are doing if they're equiparating centralized and decentralized currencies is, at the end, harming the whole market. Bitcoiners are among their most important customers - they can create pressure.
And the fact that listing majority of cryptocurrencies as "centralized" will most probably put people off from buying that certain cryptocurrency — decreasing trading volume hence decreasing revenue.
See
this answer. There are definitively incentives for the way exchanges are "blurring" the markets. But they are short-sighted - as the whole market could become much bigger if there were at least less centralized scams.
How you can expect the exchanges to separate between Bitcoin market and centralized shitcoins market when they're actually don't understand what is decentralized and centralized?
I'm sure they understand, at least the bigger ones. But they're intentionally not acting, because of their short-sightedness. That's why users could become aware of the problem themselves, and pressure them to change.
Coinmarketcap is comparing and ranking market caps. That's all. Coinmarketcap doesn't compare and rank blockchains.
Coinmarketcap provides already some filters and tags. But, "strangely" premine/non-premined or centralized/decentralized isn't among them.
I also already wrote that I've more hope that smaller ranking sites like Coingecko could introduce at least the "premine" filter. I've requested that
here, but there was no reaction (I'm doubting they ever read that thread, so I maybe should go for another communication channel). These sites are more likely to be used by cryptocurrency enthusiasts which do care about the decentralization issue, and so they could benefit from such a filter more.
Coinpaprika, a very small ranking site, has at least an item called "organizational structure", with the values "centralized", "semi-centralized" and "decentralized". But it's not possible to filter coins based on that attribute, afaik. (They even have a "premine" tag but it doesn't work at all.)
Should Bitcoin be divided from the centralized altcoins? This division definitely won't stop the endless comparisons between Bitcoin and the altcoins. I think that this is a pointless idea.
It isn't that pointless if you read many articles in big media outlets after Ethereum's "merge". Many of them argumented in a way like:
The world's second cryptocurrency changed to a "green" algorithm (PoS), when will Bitcoin follow?They ignore that Bitcoin is a completely different asset than ETH and has no "staff" which can "order" a transition to PoS (the Core team could "propose" such a transition, but it's unlikely everybody will follow). That's exactly the point I want to make. The "blurring" between centralized and decentralized cryptocurrencies affects the public opinion through this kind of media articles, and have influenced also the "Bitcoin is a scam" hipothesis which is very popular among non-Bitcoiners. A clearer separation between both would immensely benefit not only Bitcoin, but also other decentralized crypto projects and also honest centralized token projects.
The thing is, I don't think that an average user actually cares whether some cryptocurrency is centralized or not,
This may be true, at least for a big part of the user demography which are only "in crypto" to make profit. However even this group could profit from a separation: as I mentioned above in the mid term a stricter regulation of centralized cryptocurrencies is likely in the EU and the US, two big markets. It's possible that it won't be possible to trade a big part of those assets in these locations in 2-3 years anymore on centralized exchanges, so they should care.