Given:
1) Terraform uses Semantic Versioning [0]
2) Semantic Versioning specifically states that 0.x APIs are not stable [1]
Therefore:
Your complaint that a 0.x versioned tool wasn't stable is not valid.
Conjecture:
Your complaint exists as an excuse to remain ignorant of a new tool or technology simply because it is new. This makes you a luddite. [2]
[0] https://www.terraform.io/plugin/sdkv2/best-practices/version...
[1] https://semver.org/#spec-item-4
[2] https://www.google.com/search?q=define%3A+luddite