Enviro bull**** is just that, for the most part: bull****.
BUT... the enviro bull**** is driving efficiency improvements, and large ones at that, and i'm all for that.
I'll gut the cat, i don't care, but I'll pay extra for a closed-loop fuel injection system. The efficiency gains, even over a typical marine (open-loop) fuel injection system are quite large. More effective engine controls will lead to longer engine life as well.
So ***** now, but you'll see ancillary benefits other than the non-benefits the enviro-nazis are calling for.