Question about pf tables and limitation of addresses 0.0.0.0/0 or 0/0

The FAQ (https://www.openbsd.org/faq/pf/tables.html#addr <https://www.openbsd.org/faq/pf/tables.html#addr>) states:

One limitation when specifying addresses is that 0.0.0.0/0 and 0/0 will not work in tables.

Is this (still) correct?

I have tried this and it seems to be working fine, AFAICT.

I am having trouble reconciling the stated limitation with my seemingly working ruleset below....

Here is what I tried:

table <public> const { !10/8 !172.16/12 !192.168/16 0/0 }
guest_hq_if = "em3"
guest_hq_net = $guest_hq_if:network
pass log (matches) from $guest_hq_net to <public> keep state

and elsewhere in my ruleset:

match out log (matches) on $external_if inet from $guest_hq_net nat-to ($external_if)

For background, what I am trying to do is to provide access to the Internet from a guest network through my pf firewall/router, and not let this guest
traffic leak into other internal private/rfc1918 networks....

The machine I tested this on is running OpenBSD 5.8/amd64 (yes I will be updating to 6.1 shortly...)