Source code is frequently updated.
maybe but they don't make new releases of the entire thing every day.
You can't go and upload a new source code for every single commit.
you could but that would be very inefficient. you would have so many versions of the software lying around that it wouldn't make much sense. that's why they only do full releases every so often.
That's why we have git.
only developers need git. an end user that just wants to download the latest version of the software doesn't. but i wouldn't put it past casey to come up with a git type tool for ordinals. he's a genius. as is evidenced by all the stuff he's done.
You can't make sure they are real UTXO if you don't start verifying everything from block 0. So you don't have a "properly designed payment network" if there are no full archival nodes.
apparently "full archival nodes" are on the way out. they simply won't exist anymore at a certain point other than maybe you can find a service that will let you look at old history if you pay. that's what i heard...