Sure we don't have any Brits left y'all caused them to leave,
@Bush-Dog @Zero1763.
That said it's common courtesy to not delay the round (as well as being a WRITTEN rule in multiple place) therefore to avoid it as well as following a previous discourse on the Unwritten Rules(tm) it was generally accepted by the community that it would be implied. It also avoids the RED LR to be over really really quickly (an example being on Chrétien's Obby with a BLU team filled with Scouts). So in my opinion, it IS implied.
You know what else confuses a lot of players, especially older ones? Being KOS over obeying orders that were legit before that new JB players wave hit. Best example I can give you is the warden saying the word "jump". Nonono without the "first/last reaction", just "jump" and then getting killed for it. It's a legitimate order you guys. Kill the people that didn't jump, not the ones that did.
Speaking of new JB player wave, I've never seen a bunch of people rewriting the rules as much as they're doing right now like dear lord.