Complete nonsens, it is actually considered BAD manners if you say check.
"WTF, do you think i don't see that?" Don't disturb me if you please.
Haven't heard anybody say check in over 30 years and nor should they.
ps. think we were typing at the same time, FirebrandX :-)
Every tournament game should end with capture of the king. Then decapitation with a micro-guillotine and a collective bonfire of captured kings at the end of each round. This would also boost the sale of chess pieces, particularly kings. Problem solved.
This would probably encourage top players to play more aggressively, so there wouldn't be as many draws. Or you could have another post-round ceremony where everyone surrounds the players with drawn games and calls them pussies.