My point is that a claim like "Bitcoin [isn't] like your average software-project, where you fix a bug and just move on," is a potentially valuable insight if you can elaborate and support it.

It's not immediately obvious to me that the statement is true, though. Certainly it's not an average software project, since it's, among other things, a protocol. But, if you look at the history of others, like SSL/TLS, there's a lot of precedence for fixing buggy protocols, too.