I do a lot of writing. I've been hurt by similar criticism.

But I've come around to realize that some of it was justified.

Mark Twain once wrote at the end of a very long letter, "Sorry for the length of this letter; I didn't have time to write a shorter one." (paraphrased and it maybe not from MT, either.)

The idea is that less is more, especially if the idea can be distilled to its very essence. It's really hard for me to do.

The best thing is to ask for the company style guide. If they don't have one, none of this is your fault.