I'm curious to hear others' comments on this as well. Let me share my thoughts.

I'm a sysadmin for a HPC cluster. I do not have any of these certs. I think my day job involves a lot of diagnosing issues which involves detailed understanding of how the system works rather than actually developing any parts of that system.

A second fun part of this job is when designing infrastructure for use by others. To take into consideration all that can go wrong, performance characteristics of hardware, software, and workload and trade one off for other can be really challenging and fun if you're into that sort of a thing.

I'm not sure the RedHat certs will help you all the way through, although they might be a good starter in this regard. A lot is obtained by getting hands dirty and learning by making mistakes.

If you're into managing systems and building/engineering infrastructure, I'd wholeheartedly recommend spending time with small scale infrastructure in a "homelab" setting or if you can afford $$ with VMs in the cloud even.

Cheers!