Regarding RCD, where I live they’re allowed to be 30mA for wires that do not include outlets, but if an outlet is connected to the switch, the switch must cut off at 3mA…
Regarding the outlets, the type C is old, I haven’t seen those installed or sold since at least the early nineties (probably even earlier). I don’t understand why it being reversible is bad. I think switches can just cut of both wires, and you’re left with the ability to plug it in any way you like. I don’t really know whether the switches actually do that or not (or, if they’re required to do that). Can this be tested somehow?