We modify existing themes but Motion is used internally for our agency website. Launched January 2021, targeted to Shopify storeowners, we get good reviews from visitors.
Loved its many theme sections. Really suited for selling products but we modified theme elements to be universal. It's great for an agency but too slow for an online store imo.
We loved its use of animations though we still made changes to its internals to fit our brand.
The marketing agency I was working with at the time I started using Shopify chose the theme. I like it for the most part but would change how the variants are displayed. I recently paid a Shopify expert to write code to create the variants page how I want them.
Not a big pro with websites yet, so cant really tell the nitty gritty details but this theme does the job perfectly well. Just what i was looking for.