Join the shopify partners slack, there have been moves in recent months to improve partner support, though a reality is unless a Plus store is involved it’ll probably always be tier0-tier1 type of support.
Note that while there is a systemic issue with improving communication, documentation , and partners general understanding of the platform; for all the reasons I’ve commented on - Dawns lack of some feature is not really an issue for the partner system it is an issue for external businesses and people to address using the available platform apis of which tags is still one of them.