Are all LLM research papers nowadays 100+ pages beasts?[D]

Was reading some research papers put out by Anthropic (and some other organizations/researchers) and one thing I've noticed is that these research papers consistently all share the same quality: Oftentimes over 100 pages of pure words, interspersed with screenshots of very dense/hard to read prompts and replies. Extremely-dry writing style. Oftentimes almost zero math or even math symbol to be seen. Uses some proprietary model with specific versions. Seems like a lot of work to (even want to) try to replica