This makes a challenging moving target for SEO endeavors
And that is why there should be no wall between SEO and business issues, such as marketing message and branding.
PageOneResults thinks I should change my title and description to give Google what they want; I think Google should let me brand a business website as I choose
I have a lot of sympathy with your principles, oh Mad One. I also have a lot of sympathy with knowing which battles to take on and how much traffic I can sacrifice for a principle.
Here's my practical stance. If I want guaranteed branding, that's an advertising buy and not an organic SEO battle. I do my best to line up SEO with branding, but ultimately branding support is not Google's organic purpose.