O.K. First, I'm not "defending Apple" -- for a company that deals with both hardware and software, they had too many hardware and software glitches in different areas since Thursday night, and some of them are continuing. BUT let's put it in perspective:
First, the Apple support page the OP linked, talks about the issue of no push from Mac-cloud as a "symptom," so I'm not sure where the idea came from that there's "no fix coming." Maybe it will be soon, maybe in a long time, but calling it a "symptom" sounds to me like they're saying it shouldn't be this way.
As far as I know, Apple didn't start officially selling MobileMe until Friday, so new users have had it for 2 days or so, with a day of terrible web service, then all services except (from what I've read, I don't really use iWeb) iWeb publishing and push from desktop to cloud. But syncing from desktop to cloud every 15-60 minutes or manually has worked.
Old dot mac users had 24 hours of no webmail, several days of no iWeb, but now have a MUCH better web-based interface -- I'm not sure how anyone can compare it to Google's -- sign in and you have easy access to files with iDisk, galleries, mail, calendar, contacts, photo galleries and iWeb page. Gmail won't even let me make a personalized folder on-line, and doesn't have any good solution for syncing with my Mac and iPhone. I NEVER used dot mac's web interface if I could help it, and now I enjoy using MM's (now that the speed has improved). And we have double the storage that we had a week ago, now have push everything except Mac-MM, etc.
So, yes, it's been a disappointing roll-out, with more glitches than there should have been, but most services work much better than they did a week ago for me with dot mac, and new users have most of the features working. And it's only day 3, so I figure it will improve. Hopefully the new users who don't want to wait are on the free trial.
A technical question: on the web interface and on the iPhone, you have to press "save" (or something) when making a new contact or event, and I assume this instigates the push. Could the issue be that in iCal and address book, you don't, and therefore it would need constant polling to really push? If that's it, I assume a simple update to iCal and address book would solve the push issue on Macs.