I certainly agree that a high- profile suicide or equally heinous act would accelerate cancel culture into its demise but surely waiting for catastrophic disaster like that is not a realistic strategy.
The moment comes from a mortal sacrifice more often is desirable for certain. Examples of the top of my head are Thích Quảng Đức [0], and Tarek el-Tayeb Mohamed Bouazizi [1].
0. https://en.m.wikipedia.org/wiki/Th%C3%ADch_Qu%E1%BA%A3ng_%C4...
1. https://en.wikipedia.org/wiki/Mohamed_Bouazizi
2.