Sounds expensive
Those tend to be tricky hires on the small end since you tend to want jack-of-all-trades who either demands a premium salary or doesn't exist.
When you have 10 software engineers, having 1 dedicate 10-20% of their time is cheaper than hiring 1-2 FTEs that aren't writing code.
If you can get (and trust they do it right) developers to do AWS or Kubernetes, you should be able to trust them to do conventional Linux sysadmin on a bunch of dedicated boxes.
A full stack/backed dev is more than capable of learning both, but one of those has way more foot guns than the other.