Joanna probably subscribes to a service that scans forums like this one for keywords used in posts and sends her an alert when they are found.

I don't have a problem with that, especially the way she used it here, which provided relevant info and did not hype a specific product.

Here's why I am skeptical of trace mineral additives:

I think that trace minerals, if they are indeed lacking, are easily made available with organic fertilizers, compost, mulch, and amendments like rock dust and biochar.

I think that if microorganisms are not present in healthy quantities then added trace minerals will still not be as available to your plants as they need to be. There is a conversion process between the two and the plants benefit from that process.

Lime, as I said, does wonders here, but it is not the trace minerals alone that make it work.