There are benefits to Terraform, even at basic levels. You can version control infrastructure, check if manual changes have been made, and quickly spin up new, identical environments from the same configurations.

Yes, there are alternative ways of accomplishing this, but simple config files that can be easily validated and used to check against current infrastructure is an ideal way to do this.

Before Terraform, I worked on a team that built what was basically terraform. It's just a natural, obvious, and effective way of managing cloud infrastructure.