First of all, you review has not been made after proper testing.
Regarding the contact form, the plugin allows for 3 different layouts, 3 different sizes, showing/hiding subject field, mailto address, background and font colors, typography and family options, border and border radius choices.
The shortcode feature allows you to add unique elements in your page. Besides, the statement "Entire content area is built on shortcodes" is simply false. The review has been made without proper testing.
You can add custom HTML content as well as simple text to add basic content yourself. However, for the non-coders and most people, providing the ability to add custom design using shortcodes is the only way to go !
You could have tested by adding plane text or simple html to the content areas provided and found that they also work perfectly.
In all we think the reasons provided for the rating is simply unjustified.