I have seen people saying that yeah. I've also completely ignored them.
I have a 64TB ZFS pool at home (12x8TB drives in an 11w1s RAID-Z3) on a personal media server. The machine has been up for months. It's using 3 GiB of RAM (including the ARC) out of the 32 I put in it.
I have a 64TB ZFS pool at home (12x8TB drives in an 11w1s RAID-Z3) on a personal media server. The machine has been up for months. It's using 3 GiB of RAM (including the ARC) out of the 32 I put in it.