in what context is "sysvinit" the "default init manager for YP"?

  here:

https://docs.yoctoproject.org/dev-manual/init-manager.html#

The opening sentence is:

"By default, the Yocto Project uses SysVinit as the initialization
manager."

  that claim is confusing since if one initializes a build using basic
OE, the default init manager is, of course, systemd. OTOH, if one adds
the meta-poky layer to the build and selects:

  DISTRO = "poky"

then, yes, the init manager will be "sysvinit".

  so is it assumed, in the docs, that a YP build will implicitly
select the "poky" distro? should that section be expanded just a wee
bit to explain the possibilities?

rday