Personally I use an analytics tool to discover those underperfoming pages ("doindex" ones) that have for example, 0 visits in the last 6 months, to wipe and redirect them to other better performing ones (and sometimes merge part of the content if I think is good enough).
In the past I used to think about the infamous crawl budget as a matter of number of total jumps within a site and this was my main motivation to do this regularly.
After since the last news article that Google's crawl budget has become a whole constant for the site, it doesn't make any sense to merge because total of bytes will be the exact same, so basically I'm not 100% sure if this will be useful anymore (also knowing that skycrappers have fallen in power in the last 12 months overall and spreading content seem to work well, specially for long tails)
So I'm starting to think if doing this is valuable anymore, so maybe I will stop. Just need to gather more info about this practice.