Why Grealish celebrated against his former national team?🐐☠️

so what's the deal with gish's weird celebration against his home country Ireland why did he celebrate like that England played Ireland and Irish fans held up a banner saying the snakes are back aimed at Dean rice and Jack greish this was because both players used to play for Ireland before switching to England and the crowd booed them throughout the match rice scored the first goal but didn't celebrate then after assisting greish greish scored and celebrated without any chill rice apologized again but greish said they don't deserve respect because they didn't show respect if you think gish's reaction was bold like this video