Now that I've been working with it a few hours, I'll amend my comment:
It's unclear how things like toset() are useful immediately; the docs make it sound like what it does is what the default map behavior does, but makes the map sound non-iterable. The implementation, I'll concede, is fine, it's just the docs that are criminally poorly done given how many eyes were on it in the last couple months.
I think it's a mix of HC getting nerd-sniped, and then all of us being so nerd-sniped that we overempathize with the mindset that brought this kind of change to production, and just us beginning to accept that HCL/TF are moving too quickly for the expectation set by the versioning convention lol I had to modify, heavily, multiple projects to gain parity.
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