This is correct. Ive helped a bunch of people (in Linux) complaining that chrome was eating all their ram when in fact it wasn’t. Memory management is hard and it’s easy to look at the wrong indicators.
It does love its ram but not as much as people think.
I love zfs. Started using it for my data storage pool and now I have it on root as well. It has some rough edges but overall it is very stable and has amazing features.