[bighi]

When it's a product launch, I believe it's perfectly fine to criticize it.

Basic mistakes like that make it look like unreliable amateur work.

If you can't find anyone to help you proofread, pay someone. And I'm from a third world country, I know paying people might be expensive. But in the case of some basic copy like that, a $5 proofreader from Fiverr would be enough.

[megous]

If you're after precision, it's not really a product launch. It's more like a pre-release for developers and testers.

[tremon]

Agreed, but mocking is only slightly related to criticizing. There's better ways to get a point across than slighting.

[mondoshawan]

I dunno -- I've been mocked for spelling mistakes in business contexts, and my non-English speaking colleagues have mocked each other over spelling mistakes, too -- and then it turns into fun as the original author purposely goofs in later text to continue the joke.

It all depends on context.