While this may be true in terms of crafting components, it breaks down if we look at functionality.
Beyond that, even if we examine the gravi's activation method in a vacum it breaks as good design. Having "off", "on", and "draws power like on but is not on" is simply silly design. I would have 0 problem with a toggle, so long as while that toggle was on simply holding space while on the ground made me start going up, or if I walk straight off a cliff I just keep going forward. This way the toggle would be simply "off" and "on", I may not like it as the ideal, but it would at least be consistent and more usable than the current method. As it stands the design is silly and only serves to make it less convenient.