The product recommendation logic is not determined by the theme, but by the Shopify platform and is compiled over time. It is not something you have any control over.
You can find more information by clicking this link
If you wish to not display this you will head into the theme customizer and select any product, on the left side you will see the section, click on it to open it and an option to disable it will be displayed there.
You would also get the same results in a free Shopify theme. You can talk with Shopify’s support team if you want more information about this, but it’s not possible for us to control which products show up here.
If you want more control over recommended products, you can turn this feature off in the theme and replace it with an app from Shopify App Store