I'd like to add #6. I am not sure how to formulate is correctly, but it's about creating bitcoins out of thin air. The last (even though only minutes ago I thought it was also the first) time it happened in autumn 2018: https://www.coindesk.com/the-latest-bitcoin-bug-was-so-bad-developers-kept-its-full-details-a-secret. Back then I found the information that some bug could make the whole point of cryptocurrencies about the impossibility to fake coins completely useless very disturbing.
As for the analysis about halving - thanks, that gives some hope, even though it doesn't mean that we can really expect growth. Moreover, it looks like even if we do, we probably have to wait for a year or two..
I am glad that they kept it secret instead of being panic.
Thank you for the information.