Why? Crimping is far more than adequate especially if you use factory made heat shrink crimps..
Because it offers equivalent longevity, at a much lower materials cost. Crimping is not adequate in a marine environment without tinned wire and marine grade terminals unless the connections are also soldered, and sealed.
Also, twisting of wires together, even with solder, is not ABYC E-11 compliant.
That's probably an important point for people whose boats are worth more than the cost of a survey, but I'm not going to put $2000 worth of wiring into my $800 Catalina 22 when the method I described will last decades.