Nice video.
A while ago I digged through as much videos about the Siglent generator as I could find on you channel. The teardown convinced me the most.
I remembered from 1 of those videos that you prefer to change the load / output impedance setting by holding the "output" button above the BNC connector and the Siglent couldn't do that. Maybe it was a software version thing, because mine does exactly that and the video is from the first release back then.
Likely this is redundant info for you, but I saw you pushing through the menu doing that. That output button isn't really easy accessible with a T connector / splitter in the way.