Can's say about other types, Jeroen, but the 737 require complete manual flying, and I suspect all Boeings are the same. It sounds like Airbus advocate manual flight controls with autothrust. Certainly, using autopilot V/S modes is a no-no; it's too slow to respond and too likely to result in a SNAFU.
I have had two RAs (and plenty of TAs sorted by adjusting v/s pre-emptively). It really isn't a big deal, and requires just a very small attitude change. Like others said, if the cabin crew or pax notice it, then it's not been done correctly. But it is a message that needs training and sim experience to iterate.