The problem some of us have with AGPL is that we do not consider it to even be a free software license, as we think it violates freedom 0 on the FSF's definition of free software.
AGPL redefines what distribution means. It's an EULA, very unlike the GPL.
Also, some might say that GPL software was successful precisely because of the server-side loophole. That's not necessarily bad, because the cost of starting your own Google or Facebook is much, much lower than 10 years ago.
