Sweden is contemplating to stop using cash by 2023, does this mean cash might be extinct if other countries follow suit?

https://www.weforum.org/agenda/2017/10/sweden-could-stop-using-cash-by-2023?utm_content=buffer40bef&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

This is for a personal writing project I'm working on. I imagine that Bitcoin would be good for things like teaching things like math with decimals ("How many Satoshis do you need to get a tenth of a Bitcoin?", stuff like that), budgeting (Spend it on whatever you want, but when it's gone, it's gone), or even a little bit of IT / programming stuff like how cryptography works. What do you guys think of this?

"Hacking and scams remain the top risk for Bitcoin holders. Exchanges that shut down or passwords stolen from devices can easily wipe out a person’s bitcoins. Moreover, governments and central banks from various countries are starting to impose limitations on the use of cryptocurrencies.

Digital coins clearly threaten the political and economic establishment, and the regulatory environment can quickly change with the stroke of a legislative pen. Banks and governments typically use familiar language in the media, such as the need to protect consumers from new risks.

We are hearing familiar talking points from politicians who are getting pressured from the banking lobby. It seems that the root cause of the status quo’s actions in 2017 is to protect fiat currencies and traditional financial interests. Competing digital coins represent a potential end to the government’s monopoly of the monetary system." - Bitcoin.com

What are the top risks for Bitcoin holders?

I think the issue of low interest has started after distribution schema changes. So, maybe a new and better approach will be implemented later and then price will recover to a better value again.

Well guess what's going to happen with many alts when sidechains, drivechains, atomic swaps and lightning network gets implemented in Bitcoin??
A huge amount of altcoins will probably decrease even more in value.
Altcoins will be the new type of penny stocks. That's it. When you know how to trade them you will and can make great money with it. But don't expect anything big to happen with them. 5-10 coins may have serious value, the resit will stay as pump and dump.

The whole concept of banking is just a big sham, You give them your money and they use that very money to make profit afterwards they charge you all sort of taxes from the money. They can close your account at any time and freeze your asset at any given time.