As you said, writing and sharing your thoughts on your own business is fine at any stage. The author wasn't making a final, definitive assessment of his business, and it's absurd for SeoxyS to assert that he was.
Even if the author had made a "conclusion", he is welcome to. If he learned something in two weeks, congratulations to him. If after two weeks post launch, and months of development, he cannot plausibly have "made a conclusion", then no one on this thread has the right to "make a conclusion" after reading one blog post.
Even if the author had made a "conclusion", he is welcome to. If he learned something in two weeks, congratulations to him. If after two weeks post launch, and months of development, he cannot plausibly have "made a conclusion", then no one on this thread has the right to "make a conclusion" after reading one blog post.