Judging a report's quality or quantity by the number of pages is pretty poor so to answer the OP's question, Yes, that is poor info.

You could use lots of big picture or only a few small ones and greatly change the overall size of the report.

Things I've always tried to stick to are the following:

Try to keep the disclaimers and all the blah, blah about what you didn't do in the contract. A bunch of fineprint in the report makes it difficult to understand and read

Try to keep the check boxes, grids, symbols and other junk to a minimum. Again, it makes reports confusing and hard to follow. I'm not saying don't have any but there should be more to the report than just a table and check boxes.

Try to keep the report focused on info specific to the the house you're inspecting. Background info is good but nobody wants to wade through three paragraphs about houses in general to find one sentence about THIS house.

Have a reporting style and stay consistent. For me it's; state the problem and location, state why it's a problem and/or how it affects the house, then tell them what to do about it.

My reports are usually at least 12 pages and as many as 30 or more. Average is probably around 20.