Hey @arwqiime,
Sorry for losing track of this thread!
Our goal was to have these fixes available in the latest release, however it requires us to update a dependency chain in biom-format -> scikit-bio -> scipy.
We attempted this in 2022.11, but it went pretty poorly, so since the start of this year, we've been working behind the scenes on a new CI system to make these larger transitions possible. We were expecting that system to be online by the 2023.5 release, but we didn't quite get there. So for the moment, you are limited to some of the suggestions in this thread, none of which are super fun to get working.
Hopefully we will have our new CI online for the next release (perhaps 2023.7?) so that we can wrangle these dependencies correctly and get the latest unifrac installed which will fix this issue for everyone missing AVX.