Reducing visibility is a secondary concern in modern peer-to-peer conflicts. T-72s are doubling their silhouettes with the addition of top slat armor, in Ukraine. RCWS provides the crucial capability to return fire while under attack, equips small units with excellent optics, and, more importantly, adds thermal imaging. Increases firing range. In Syria, Kirpis were precisely engaging YPG targets from over 2 kilometers away. Adding a RCWS to basic vehicle maybe quadruples the combat effectiveness of that vehicle.
See the RCWS firing under immense fire from Russians.
https://www.reddit.com/r/CombatFootage/comments/16qezwh