having no recognizable or distinct reason for one's fame other than high media exposure
徒有虚名
enjoying a brief period of fame before fading back into obscurity
名声如昙花一现
said as an ironic comment on or reply to an overconfident assertion that may well be proved wrong by events
但愿如此
‘I'll be perfectly OK on my own.’ ‘Famous last words,’ she thought to herself.
“我靠自己完全没问题。”“但愿如此，”她心里想。