looking good! I think we also need to consider that much of these sci-fi models, with lots of detail, cut out sections etc especially weapons and sci fi gadgets are modelled in cad software like fusion 360 and moi, where you can Boole all day long to your hearts content and not have to worry about topology, vastly improving the modelling time. Not only that but, allowing you to really play around with design aspects and experiment without having to worry about booleans causing ugly distortions to the mesh and so on. A lot of those models would be truley horrible to model any other way, I’ve done a few sci fi models of that nature with sub d modelling and a nightmare doesn’t put it in to context.