By flying through, I don't think that people here mean doing something different, but not, for example, slavishly pitching up to +20 deg and then having to pitch down to +10 due to the sudden speed drop off, usually then commanding another pitch up as the speed rockets away. One would sensibly see that the FDs are overreacting and maintain smooth inputs to keep the speed stable. Another example would be executing a direct to in a turn with LNAV. One wouldn't just follow the inevitable FD zigzag, but point the aircraft for a sensible intercept and wait for the FD to come in.
What I have seen which I don't agree with, is the PF asking for VNAV an then upon seeing a TCU ahead holding the aircraft at Vx whilst the FD pitch bar descends way down there somewhere. Then I would agree, either select best angle, another mode or switch it off.