With the appropriate change in ZFS to give the root kstat node CTLFLAG_SKIP:
```
➜ ~ sysctl -a | grep kstat
➜ ~ sysctl -aN | grep kstat | wc -l
688
➜ ~ sysctl -ad | grep kstat | wc -l
688
➜ ~ sysctl -at | grep kstat | wc -l
688
➜ ~ sysctl -N kstat | wc -l
688
➜ ~ sysctl -d kstat | wc -l
689
➜ ~ sysctl kstat | wc -l
13590
```