That's a misinterpretation of how Cardano pools are counted and frankly misleading to the broader community.
First, many pools are ran by the same entity, giving a false feeling of decentralization.
Second, there is no minimum requirement to how many ADA needs to be at stake. This creates the possibility to pump the pool count, as it is the case. Many included pools are empty or have a very low amount of ADA at "stake".
Contrary to what most believe, having the most validators does not necessarily mean the chain is more decentralized than another. As long as a certain validator threshold is reached.
After the threshold 1000 validators more or less wouldn't matter much.
True decentralization is not found only in blockproduction. It is in on-chain governance, token distribution, ecosystem DAO, independant Core developers, etc.
Only looking at the amount of validators is a foolish thing to do.