And that is correct. ETB triggers are checked AFTER the event, a time where any continuous effects from static abilities are already applied. Because there is NO TIME at which the permanent is on the battlefield and not subject to those effects.

611.3c Continuous effects that modify characteristics of permanents do so simultaneously with the
permanent entering the battlefield. They don’t wait until the permanent is on the battlefield and
then change it. Because such effects apply as the permanent enters the battlefield, they are
applied before determining whether the permanent will cause an ability to trigger when it enters
the battlefield.

Example: A permanent with the static ability “All white creatures get +1/+1” is on the
battlefield. A creature spell that would normally create a 1/1 white creature instead
creates a 2/2 white creature. The creature doesn’t enter the battlefield as 1/1 and then
change to 2/2.