Most of the stuff you mention can be done in an e-book. Things like symbols, fonts and images. There are some restrictions though and especially for the fonts you must be sure you have the rights to distribute the embedded font.
Some stuff may not be available for all formats. For example on the mobi format for older Kindles.
Text boxes will usually not play nice and are very hard to do. And, your president is wrong and you are right. Pagination is being done on the fly and is dependent on the reader and font-size. That makes dealing with text-boxes and images hard.
There is also something called fixed-layout where you would not have issues with the pagination. However, only few readers can handle those.