I don't know about Boeing but in Airbus, FMA callouts are an integral part of flying.
Airbus golden rule no 5 - Know your FMA at all times.
From A320 FCOM -
The PF should call out any FMA change, unless specified differently (e.g. CAT II & III task sharing. Therefore, the PF should announce:
‐ All armed modes with the associated color (e.g. blue, magenta): “G/S blue”, “LOC blue”.
‐ All active modes without the associated color (e.g. green, white): “NAV”, “ALT”.
The PNF should check and respond, “CHECKED” to all FMA changes called out by the PF.