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i'm not going to argue i just want to know what they know. what make people think eth.2 would pump? what's the significant changes?
You are talking about the technical side? Fair enough. I gotta admit that I'm not too confident with my knowledge on how eth2.0 works like shards and all that.
The rules are quite different when you think of the factors that's going to affect the price [pump or dump]. The popularity and the user base should also be considered aside from the profitability and the technical developments. Just think of how bitcoin is still the king even if it has real scalability and network fee issues.
Comparing bitcoin with ETH is stupid. Bitcoin serves its purpose because miner's trust it and put money into establishing mining farms. This trust comes from the technology and the truly permissionless nature of changes. Bitcoin's use case has been of a solution to the double-spend problem and it has delivered that. It is the foundation on which this whole experimental spaceship is being built.
Compare that with ETH which is far from its initial promise of being a world computer that would allow anyone to host DAPPs running on a decentralized processing network. They then started talking about sharding and then completely pivoted to PoS, which i fail to understand why everyone is so excited about.