Ah I like that analogy! The Constitution and Wikipedia are both just text right? They both need to evolve!
Discussion
While it is true that everything in life is transitory, that does not mean that everything is equally in need of change to survive. In fact, changing something without proper exploration of its downstream effects is precisely what destroys them in the first place.
If quantum computing isn't bullshit, it seems like adding "arbitrary user input" to the ledger / mempool should be pretty low on the priority list of "improvements."
I like this analogy because it so apparent the process to change them are so drastically different. As they should be. Constitution requires amendments. Wikipedia, you just click edit.