A scrum meeting should not take more than 30 seconds per person, perhaps 90 for one or two persons, but not EVERY.
Sometimes you need more, sometimes you need less. By the way, Scrum masters are often bad at determining which communication is important and how long stand ups need to last on both the short and long ends.
Might be so, however it is clearly defined in Scrum what the stand up is about, you answer three questions:
a) what did you do yesterday and did you finish it
b) what are you planning to do today
c) are you blocked by obstacles someone has to remove for you
Every other discussion/communication has to happen outside of the Scrum meeting in smaller circles (so only the relevant people are involved).
More importantly, why is the Scrum community unwilling to discuss questions like this, simply saying "It's not true Scrum, so I don't care."?
As long as you have not implemented an agile method, regardless which one, there is nothing to discuss (about that method). So what is your point? If you have questions join the relevant mailing groups or e.g. the discussion groups on linkedin.com
When your standup meetings are longer than 30-60 seconds per person, that means in a team of 10: roughly 5 minutes, then you are not doing Scrum. If you can not even conduct a Scrum meeting in the way it is intended, then it is very likely that your other Scrum activities need improvement, too.
Your critics sounds like a guy who likes to lose weight, but instead of doing the every day 2 hour exercises only does every second day 45 minutes.
Instead of eating healthy breakfast and lunch and dinner and stopping snacks in between, he eats half of the usual breakfast, lunch, dinner but keeps the snacks.
Afterwards he claims: hey!! I at least did half of the stuff, so I should see half of the effect. And that is where he is wrong ... same with agile methods (or for a matter of fact: with any "process" regardless if for software or for material goods), you either implement them, or you don't. Cherry picking easy stuff and not doing those things right and then struggling to see a positive effect is just plain dumb.