Maybe I am a cynic, but how does a book that is unremarkable in every way besides its hidden true author and only sold 1,500 in the UK get reviewed in the first

Maybe I am a cynic, but how does a book that is unremarkable in every way besides its hidden true author and only sold 1,500 in the UK get reviewed in the first place? It seems a little too perfect. Famous author, sometimes painted as mediocre by reviewers and with a history of testy relations with the press, secretly releases a book that gets great reviews. And it all comes out due to Twitter account that gets deleted.