@JenelleBlack, I'm not really surprised at all. The awesome flexibility of GIS means that there isn't ever a single method of doing things, making it difficult to please everyone. I think that is why many ArcGIS Ideas don't see any traction--the request is too niche even if it might help an entire particular segment of industry. I'm glad I don't make the decisions regarding the work plan. I've been in your position regarding other aspects of Pro (and Desktop before that).
That said, Esri staff have finally joined this thread requesting feedback, namely @ChristopherAllen, so perhaps he will follow up with his own comments. He is on the charts team so your thoughts should make their way back to the rest of the team for discussion.
When I approached staff with this issue at the 2022 UC, I pointed out that the best overall option would be to give us a setting in the options dialog to specify the number of decimals for display. But providing that ability will take more time to test for issues after building that functionality into Pro, making it harder to get on a work plan for implementation. And, as you point out, this thread has been all about more decimal places rather than fewer--mainly returning the display to the former 6 places. That is an easy 'fix' and requires almost no testing other than to make the change and verify it now displays that number of decimal places.
In the overall view of things I would love the flexibility of the options dialog setting. But I'd rather have decimal places back in the short term and request the dialog option as an enhancement to be implemented in one of the upcoming development sprints.
Perhaps submit your Statistics functionality desires in an Idea. If you share a link to it in this thread, I know that I will gladly upvote it and I am sure others will as well.