Is the system design course by Arpit bhayani from asli engineering worth it ? Does it actually help in the real world?

No, it's not.

I attended the arpit training. If you are very new to System Design then you can attend. He tries to cover his own way.

Other than that he picks a few designs and talks about specific problems like CDC, Kafka, partition, Load Balancer, etc , you should have basic knowledge on cloud storage like S3 and how the Kafka works. He improves the design as he goes.

No course is worth 40k. Ditch him.

Get bytebytego instead