Improve clarity on whether there are or can be non-contentious hard forks

[moneyball]

David King feedback: "the example illustrates a hard fork which was kind of obviously contentious in ideology. are there examples of hard forks that might help bitcoin but are less contentious/more benign? I'm sort of left reading this thinking "wow, hard forks are about ideological bickering" versus "a future hard fork may be generally useful/broadly agreeable while still requiring a backward incompatible hard-fork style upgrade""

Steve Lee response: "Most changes can be done with a soft fork so will likely be done that way.

Severe bug fixes that require a hard fork are the likely only candidates that would be non-contentious. I'm aware of only one such bug fix: https://www.coindesk.com/tech/2020/08/07/fixing-this-bitcoin-killing-bug-will-eventually-require-a-hard-fork/

Any other hard fork will be contentious solely because it is a hard fork."