A friend who recently finished her PhD had a similar experience, where all the senior scientists at our lab were concerned because her thesis was "only" 100 pages long and she didn't go through a professional editor to have it perfected.
My preliminary defense thesis had to be 50+ pages, but during the presentation, it was pretty obvious that the committee had at best looked at the table of contents. It all feels like such an unnecessary waste of effort. Even with my own thesis, over half of it is just padding with very fundamental background information because the work isn't really so complicated as to require that many pages to discuss, it's just demonstrating more advanced simulation capabilities by implementing GPU acceleration for a niche but simulation heavy field.
Yes, the only hard rule in my department is having a minimum of 50 pages, the idea that 100 pages is not enough came from the scientists applying their own experiences from years ago. Technically there was nothing they could do about her thesis having fewer pages, but as inexperienced students, it's obviously a little scary when people you look up to sound concerned (since academia is full of all sorts of unproductive and unstated expectations).
A friend at another department only had a minimum requirement of 5 pages, and his thesis ended up being just a collection of his publications.
> his thesis ended up being just a collection of his publications
We have in France the concept of "thesis on publications" where you write an intro, an outro/conclusion, and bind your articles in the middle. This is very helpful when you have already published everything that builds your thesis.
My preliminary defense thesis had to be 50+ pages, but during the presentation, it was pretty obvious that the committee had at best looked at the table of contents. It all feels like such an unnecessary waste of effort. Even with my own thesis, over half of it is just padding with very fundamental background information because the work isn't really so complicated as to require that many pages to discuss, it's just demonstrating more advanced simulation capabilities by implementing GPU acceleration for a niche but simulation heavy field.