I completely agree. I have been on ICCV this year (only 7500 participants) and found it really difficult to find people who I would like to talk to (e.g. because they had a nice presentation). The number of submissions has doubled since the last time (two years ago) [0]. It is just a constant overflow of information and the conference (including workshops, which were pretty good) lasted seven days. I think these ML/DL conferences need to be split up and specialize more to manage the interest.

[0] https://github.com/hoya012/ICCV-2019-Paper-Statistics