These posts keep cropping up every now and then, see this post from yesterday. One of the top comments explains why these posts are meaningless or even harmful.

To reiterate: Germany issues travel advisories for almost any country to inform tourists what to pay attention to and what to be prepared for. For example warnings about bad water quality in ponds in some areas, possibilities of blizzards, forest fires in some areas, differences in driving laws and car rental laws, acceptance of currencies/payment methods, recommended vaccines for specific areas and of course what legal documents you need to enter. A few days ago the travel advisory for the US (see here) was updated, adding that you should be careful in Minneapolis because of the protests there and harsh reactions from the federal officers, and information about the current winter storm was added.The advisory also informs about strong border control measures such as officers being allowed to search through your phone/laptop but this was added almost a year ago.

This travel advisory is useful and exists not only for the US but for almost all countries, including Canada, France, Japan, Israel, China, etc. What would be more important is if there had been a travel warning issued for traveling to the US, which is not the case (see here).

The US may not be doing well but these travel advisories from Germany are no indicator of that.