FSF/GNU have an example of an AGPL proxy becoming compliant by serving it a page with the offer to download source code on the first request, pretty far off from reality if you ask me. That's also the big other issue, AGPL is unclear about conveyance over a network. Does a header work? Does a link to the source repo work or do you need to offer hard copies? What do you do if the "networking" is a highly specific protocol that simply can't make that offer over the wire?
I much prefer the clarity of intent of the EUPL.