It's a secret code the media use mate in Britain, when they use terms like great football, best team to watch, attractive open attacking play. Etc
It's nearly always used in connection with teams that score lots but have a woeful defence and a soft centre to them, because ultimately what makes a team exciting to watch is for the general Womble watching out there is a team that can be battered themselves or batter and often involved in weird end to end games.
See city this season, arsenal for the last ten years, the rs since Rogers and moreso now etc us under Bobby
Meanwhilst a very high scoring Chelsea team that won the league the other year wasn't labelled like that, they got called professional, workmanlike , methodical etc.