What’s wrong with the Bengali character set? A Google search doesn’t show any discussion on limitations here. And while power and privilege do inevitably play an unintended role in prioritization, Unicode successfully encodes several entirely dead languages - so it’s not like everything not relevant to English speakers has fallen by the wayside.

And while you’re correct that emojii do require some amount of UTC resources, it’s worth noting that most of that work is done by a special subcommittee to not distract from the mainline work of other languages, and that emojii have brought new attention and new volunteers to TUC - so I’m not sure how significant the impact of adding emojii to their workload really is.