Assimilation: The Strogg Way or the Borg way?

Yeah, I would agree.
The Borg assimilation process does seem a little more, humane, as you said. To strogg basically butcher their, "patent".

I think it was best described in Quake 2 when the character finds themselves in 'Nursury and Food processing'...the concept so completely efficient as it is lacking in any sort of feeling is frighteningly alien and inhumane.

These aren't life forms that have incorporated technology onto their persons and have become part of a collective. For the Strogg, it's more like machines that use biology to suit it's own needs with no regard to the things that we consider as humans. The Strogg are the definition of inhuman with all the frightening aspects that go with it.