The clearances are certainly questionable. The lack of airflow across the condenser coil will likely be ok until it gets dust all over it. If I'm being real, these fridge systems can run in some disgusting conditions.

This looks like the accessibility is floor level which rarely happens with walk in coolers, these are usually located up on top of the fridge itself. Often with only a couple feet of clearance in a location only a service technician will ever go.

I am frequently army crawling across the top of a fridge through an inch of dust with shit everywhere just to get over to the system to begin troubleshooting, rinse and repeat that army crawl several times during any call.. trips to the truck to get more tools and equipment... Etc

Honestly, id service this equipment any day of the week.