I have not much to add to your explanation but the most important thing in my opinion is:
We need to keep being positive just like in every situation in our life.
This is not the end and like ned said:
the blockchain has nothing directly to do with steemit.
If steemit is going down - we have many other cool platforms on that blockchain.
Real problems will result in solutions because we have so many smart people on that amazing blockchain.
I keep buying steem - powering up - look in a bright future - work on my projects and content just like normal.