So perhaps do you guys think the reason why most countries are having some restrictions on Bitcoin is because of the effects it has on the bank that people prefer to invest there funds on Bitcoin instead of banks?
I will start with the fact that stompix is right: you give too much attention to worthless memes on twitter.
Banks are old enough to adapt. Of course, some few die in the process, but if you know where to look you will see a lot of changes from the last years, from lowering the fees and speeding up transactions to facilitating bitcoin buying and storage or even steps towards merging banks with exchanges (I don't know though if this last one became reality).
Yes, only few do this, most are still afraid and push towards Bitcoin ban. But I find JPMorgan a great example: while Dimon is talking all the crap against Bitcoin his bank does all the steps to become a big player in offering Bitcoin or BTC ETF to other institutions.
The restrictions are there for two reasons: politicians and bankers are on the same side (of course, most politicians don't take a side for free) and while some banks are afraid of losing some market share, the other problem is that the really smart Bitcoin users' funds are difficult to track and link, leaving governments out of ideas in some issues they know to handle only by tracking the money transfers.