That's completely okay and in fact it is good that people care about their sites.
Good. Because a lot of people do. I'm one of them.
Yet there is nothing for us to fix because there is nothing wrong:
That is not how it is going to come across or how it will be upheld. I am getting Google warnings about this and notifications about this.
because they're not standardized
Google makes their own standard. You can comply or ignore it. Ignoring it usually has consequences.