Great article on an interesting topic.
The article mentions the great Physicist, Prof. S.N.Bose's take in a lecture delivered to the Indian Science Congress in 1944. It is titled "The Classical Determinism and The Quantum Theory".
The corresponding pdf can be found at Prof.S.N.Bose archive under Section 6 "Documents" titled "Presidential address at the Indian Science Congress, Delhi,1944 [Current Science, Vol XIII, No. 1]" - https://www.bose.res.in/Prof.S.N.Bose-Archive/
Prof. S.N.Bose is the Physics great after whom "Bosons", "Bose-Einstein Statistics", "Bose-Einstein Condensate" and even "Higgs Boson" are named - https://en.wikipedia.org/wiki/Satyendra_Nath_Bose
I find SN Bose's derivation of quantized distribution of energy levels so much more elegant than Plank's which reads more like a desperate hack to force a predetermined answer.