I don't know how stupid this may sound, but why do we say dollar cost averaging, DCA, instead of Satoshi cost averaging, SCA or Bitcoin cost averaging, BCA?
Why DCA, instead of BCA?
This is owing to the fact that we could associate any legal currency with cost averaging as a strategy of investment for either short or long term durations.
You can call it whatever name that suits you, but the generally known terminology is Dollar Cost Averaging. If you decide to coin another terminology for it but still maintain the principles, I don't see much of a problem there. If you are buying with any fiat payment system that is denominator in let's say Euro, you can even call it Euro Cost Averaging, ECA and that will be your choice but that does not mean we have to leave the currency used mostly for international trades for our respective local currencies.