Starting from the 1st of July Google announced that page speed will be a ranking factor for searches. The fact that Google cares about the speed, it is just the right time to start considering making your Shopify store faster and taking advantage of this information among the first ones.
It is already known that higher speeds reduces bounce rate and improves conversion. With already engaged customers, this integration will let you showcase them not just text reviews but also star ratings on beautiful AMP pages.