As Disaster alludes to, there's nothing magical that happens jumping from one platform to another, at any given trigger weight or travel distance, half cock or otherwise etc. The reasoning is "
just keep your B.H. off the B.S." like with a true D.A.O., which does make sense. The problem is, if you can make that jump, then the same justification could be taken as far as desired. For instance carrying a decocker-only T.D.A. in single action mode, or a feather touch S.A. with safety OFF are both theoretically no less safe than an M&P, as an M&P similarly is to a revolver (so long as you mind the "B.H./B.S." rule), but anyone who considers either of those safe are in a very small minority! I see it as a continuum where each individual draws their own safe-unsafe thresholds depending on their own comfort levels, per numbers and types of safeties, trigger travel distances, trigger weights, visible hammer vs internal striker etc.
Now A.F.A. naming them, when they are not true D.A.O., I always refer to them as "D.A.O." striker fired etc. Safe Action can be especially confusing if you go to abbreviating it (it's a S.A.,
without a M.S.?
NO it's a SAFE action without a M.S. L.O.L.)!