Newbie question: Astra and many other other themes claim to be compatible with Woocommerce. Woocommerce says it can be used in any theme so what “compatible with Woocommerce” means? What are the merits of using one that claims to be compatible?
While WooCommerce will work with most themes, it won't look good on any themes that don't have specific styling integration.
Also, a theme that has integration will have enhanced features people expect, like having a shopping cart icon in the header.