People will not hold real btc because ETFs could not be called real Bitcoin holders. Etf trader are not holding any btc in their wallet. An ETF is just a contract in the form of paper.
Sure, but existence of ETF doesn't prevent anyone from buying and holding actual bitcoins. ETF is designed for institutional investors or for those who, for whatever reason, don't want to hold it themselves. And we all know that ensuring that our private keys are created and stored securely is not an easy task.
I wouldn't recommend anyone, who got into bitcoin just to trade it, to keep their coins themselves. The risk of losing them would be greater than with keeping them in an insured (I assume) ETF.
If prices increase then these big asset managers can dump the market to stable Price. This will decrease the interest of crypto users. In short the growth in price will be very slow just like gold
I don't think there's anything that prevents big whales from manipulating BTC price currently, so I don't expect introduction of the spot ETF would increase that risk.
The higher the volume, the less volatility. Not being able to experience another x1000 pump might sound bad at first, but it's a god thing in a long run. Due to it's nature BTC should still be steadily increasing in value and become more of a solid store of value than a high-risk-high-yield asset.
Bitcoin will not remain totally decentralized and the Government will be able to control it.
How exactly? In theory, nothing changes in that regard. Except maybe that with greater value, there's a greater incentive for governments (or other players) to try to highjack i.e. by co-opting devs and miners.