Earlier quoted context omitted.
The vast majority of top projects are essentially scams and the real projects are not in the rankings. Even promising projects seem to turn into scams once they get into the top 200 or so. It's as if some wealthy investors buy up a lot tokens from top projects and then threaten the founders to crash the price unless they stop development and start wasting time. I've worked in the blockchain industry for several years…
Don't go and claim the vast majority of top projects are essentially scams, that's just spreading false information.
Bitcoin: Uses the electricity of a country to process 2 transactions per second. Layer 2 solutions such as Lightning Network have some significant drawbacks which make them unpractical and vulnerable to multiple attacks. They've been trying and talking it up for years - No results.
Ethereum: Doesn't scale. The entire ecosystem (including all ERC20 tokens) together cannot process more than 30 transactions per second. New ERC20 tokens have to pay the same HUGE (e.g. $20 per transaction) fees as the mainchain; all tokens slow each other down (compete for resources from each other and drive up each other's transaction fees). They said that sharding was essentially ready years ago but now they've basically canceled it (or 'put it on the backburner' as they like to call it) in favor of extremely complex and vulnerable layer-2 ZK-Rollups solutions which are completely unproven (we don't know what will happen when many projects start adopting rollups; expensive on-chain interactions still need to happen).
Polkadot: They claim everywhere to have 'Parachains'. The reality is that this feature doesn't exist yet. The way it's designed is extremely complex and the scalability benefits are limited because there can only be a limited number of parachains.
Also, one thing which almost all the projects have in common is that they're mostly targeted at developers... Yet as a developer, there is almost always a MASSIVE amount of friction involved in setting up and integrating the blockchains with other systems. For example, Ethereum requires minimum 300GB of disk space to run a node (you need to run a node to do any serious integration testing). Also, the Ethereum node doesn't even provide a basic search feature; you need to use CENTRALIZED third-party services in order to search the blockchain data (that's because the node writes to a file instead of a proper database)... OMG. I could go on and on and on. There is just so much money behind these projects that the entire community will constantly twist the facts and present a severely distorted view of reality.
There is no limit to the amount of deception and self-deception when there is money involved.