That article is just a big bitch fest, or maybe it is just his toen I do not like. You could have summed what he says into 2 sentences. As you say, it would have been much more mature to have compared the 2 products, show why their product is better and done away with all the childish ranting.
Cut the guy some slack.. Imagine you just woke up to see Google is now your biggest competitor... I imagine this was written off the cuff and during a state of panic. Entrepreneurship is already a tremendous roller coaster of emotions and this I am sure was not helpful. The founder of LiveNinja doesn't seem immature to me. He built a great product and I am sure very passionate.
Sure, I feel for the guy and I'm sure they are very passionate people, I don't doubt that. But the problem with "off the cuff" on the internet is that lots of people read it and it's not in internet memory. They're running a business and sometimes you need to take the personal touch out of it a little.
What would have been better, from my perspective, would have been after reading the post saying "hey, these guys have a much better product that what Google has launched, it is much more mature and much more thought out. I think I'll give them a try and tell my friends to do the same". Turn a negative into a positive, that's all he can do at this point.
