Thanks for your review.
We see that you’re not completely happy with the Yoast SEO plugin. Google recently started to rewrite SEO titles much more aggressively than before; that’s the reason why you might have noticed some difference between what Google is showing and what you have set within the Yoast metabox. That said, as you can read in this Google document, it’s still recommended to create great HTML title tags, as Google still use them most of the time.
We agree with your phrase, “Google cares about great content“. Yoast SEO comes with several tools that help you optimize your content. For example, the readability analysis checks whether your text is easy to read and well-structured. Readability is important both for your audience and for Google. If your text is well structured and clearly written, readers will understand your message, but perhaps, more importantly, it will also help Google understand better too.
As for the traffic lights in the plugin, we understand that sometimes it’s tempting to attempt to get all green lights on the Yoast analyses. However, these are general guidelines, not strict rules that will hurt your ranking. If you feel your page is properly written and has a good user experience, then some of the warnings can be safely ignored. You can read more about this on this article on our website: https://yoast.com/want-green-bullet-wp-seo/
Thanks again for your comment!