I was an engineer for 15 years and have been a tech presales for 4 years now. You couldn't be more wrong.
Best engineers making the best product ever will not make a dollar without good sales people and marketing and product managers and VC and ... You need ALL of these to make a succesful company.
Your company "saves" over 100k/month paying WAY too much for EKS, which is extremely expensive.
If you're at any decent scale (looks like you are), then switch to GKE, or switch to on-prem and buy some hardware + a Kubernetes distro like Mirantis/Openshift/Tanzu.
Heck, go run k3s on Hetzner and you won't have that much more work, but save literally millions at the scale you're talking about.