Yes indeed, and Sense engineering says that they can’t do anything meaningful with my home because the Franklin Electric constant pressure pump (its signature varies dynamically depending on how much water is being used) is so “noisy”. The pump is a synchronous motor and the controlled generates variable frequency power for the pump, in addition to variable power draw. So it’s a jittery line with lots of wobble riding on a variable magnitude base.
Visually it’s absolutely clear and identifiable, their chief architect picked it out immediately, but the algorithms aren’t designed for such behavior.
And, since it’s both my domestic water source and my 500’ deep geothermal well water source (which provides for heating and cooling, as well as domestic hot water), the well runs frequently enough to pretty much obscure my entire home.