Importance is highly dependent on your primary marketing channel. Consider the amount of companies that don't even have a website to begin with or have one tha

Importance is highly dependent on your primary marketing channel. Consider the amount of companies that don't even have a website to begin with or have one that hasn't been updated since the early 2000s. And they still do well. Because their target audience discover them in a different way. In any case wrapping up a simple about page is not a large effort and probably won't hurt to have anyway so do it. But spending a bigger chunk of time on it should be done only if this is at least a somewhat critical part of your marketing strategy. My 2c.