I won't argue about whether or not Kahn deserved to have songs cut as Bacall and Verdon did, or about whether or not Prince was fooling himself and/or having his collaborators unfairly blame Kahn or even about whether or not Kaye is a star.
You and others may believe all this.
What is indisputably true however are the merits of the score for 20TH CENTURY. IT is Coleman, Comden and Green at their absolute best.