A better question is, Are there any native Bengali speakers creating character set standards in Bangladesh or India? If not, why not? If so, did they omit your character?
I ask, because although you prefer to follow the orthodox pattern of blaming white racism for your grievance du jour, the policy of the Unicode Technical Committee for years has been to use the national standards created by the national standards bodies where these scripts are most used as their most important input.
Twenty years ago, I spent a lot of time in these UTC meetings, and when the question arose as to whether to incorporate X-Script into the standard yet, the answer was never whether these cultural imperialists valued, say, Western science fiction fans over irrelevant foreigners, but it was always, "What is the status of X-Script standardization in X-land?" Someone would then report on it. If there was a solid, national standard in place, well-used by local native speakers in local IT applications, it would be fast-tracked into Unicode with little to no modification after verification with the national authorities that they weren't on the verge of changing it. If, however, there was no official, local standard, or several conflicting standards, or a local standard that local IT people had to patch and work around, or whatever, X-Script would be put on a back burner until the local experts figured out their own needs and committed to them.
The complaint in this silly article about tiny Klingon being included before a complete Bengali is precisely because getting Bengali right was more complex and far more important. Apparently, the Bengali experts have not yet established a national standard that is clear, widely implemented, agreed upon by Bengali speakers and that includes the character the author wants in the form he/she wants it, for which he/she inevitably blames "mostly white men."
(Edited to say "he/she", since I don't know which.)