in that first video, when the 2nd player to flick did; he left the puck in the open for the defending player to steal - but the defender decided to foul him instead

generally flicking in that situation will only result in a lost puck, unless your trying to force the defender into a turn where another one of your attacking players will be on the other side (double-teaming)

in the 2nd video if the player that flicked the puck had enough speed they could of just swam around the inside player - they already had enough space on them