Agree. You need to see it from the other side. Most likely, they are receiving 100+ applications, so the chance that your application will be seen is too low.
I also limit myself on how many applications I see in a day (no more than 20 on a busy day, 50 on a not so busy day) so that I give every resume a fair read. A team can only do so much in a day. It's disheartening when you see a blatant AI use (and it goes into the trash bin right away).
I think GP means they stop at this point to ensure that they are giving all of the resumes a pretty fair shake by being fresh.
Afaik, any kind of slush-pile reading (including grading, which is probably the best researched) tends to get less fair as the process wears on the reader.
GP isn't optimizing for finishing the pile, but for making the most of what's in it.
I do. Credentials-wise I have BS in one of the STEM and currently enrolled in MS CS with intent to pursue PhD in Maths/CS. I have around 8 YoE and worked from Series B startups to IBs.
I want to give everyone a fair shake (including reading cover letters) and for me, resume fatigue sets in if I read more than 50.
