Product schema has very small image on Envato

I am building plugin with parser for users to promote products from different sites and I found that product schema in Json+LD has very small image (logo image) as image of product.

Google recommends to use images over 50kb for product image with clear and quality product view. Envato uses 80*80 blured low quality logo with 8kb size instead of product image. Such images are not valid for good representation in product schema markup

this is example of image from schema, which has no sense for product presentation and it’s very small size