What is your basis for saying that the Australian Wendys is a burger place? 

This object was last edited in 2013 and the American burger chain seems to have opened its first Australian store earlier this year: https://www.news.com.au/finance/business/retail/wendys-opens-first-australian-store-40-years-after-last-one-shuttered/news-story/147db7633374fbaabad3ad0b11fec0b6

Additionally, Wikipedia seems to be aware of an Australian company called "Wendy's Milk Bar" which it describes as an "ice cream parlour franchise chain" that was active in Australia at the time of last edit. 

https://en.wikipedia.org/wiki/Wendy%27s_Milk_Bar

Additionally two mappers that have done the bulk of their edits in Australia seeemed OK with the previous classification as "cuisine=ice_cream".

Have you confirmed that this is the burger chain with a visit?