I have written both TF and then CDKTF extensively (!), and I am absolutely never going back to raw TF. TF vs CDKTF isn't declarative vs imperative, it's "anemic untyped slow feedback mess" vs "strong typesystem, expressive builtins and LSP". You can build things in CDKTF that are humanly intractable in raw TF and it requires far less discipline, not more, to keep it from becoming an unmaintainable mess. Having a typechecker for your providers is a "cannot unsee" experience. As is being able to use for loops and defining functions.
That being said, would I have preferred a CDKTF in Haskell, or a typed Nix dialect? Hell yes. CDKTF was awful, it was just the least bad thing around. Just like TF itself, in a way.
But I have little problems with HCL as a compilation target. Rich ecosystem and the abstractions seem sensible. Maybe that's Stockholm syndrome? Ironically, CDKTF has made me stop hating TF :)
Now that Hashicorp put the kibosh on CDKTF though, the question is: where next...
There are things I think Terraform could do to improve its declarative specs without violating the spirit. Yet, I still prefer it as-is to any imperative alternatives.
Is that an easy mistake to make and a hard one to recover from, in your experience?
The way you have to bend over backwards in Terraform just to instantiate a thing multiple times based on some data really annoys me..
If you're alone in a codebase? Probably not.
In a company with many contributors of varying degrees of competence (from your new grad to your incompetent senior staff), yes.
In large repositories, without extremely diligent reviewers, it's impossible to prevent developers from creating the most convoluted anti-patterny spaghetti code, that will get copy/pasted ad nauseam across your codebase.
Terraform as a tool and HCL as a programming language leave a lot to be desire (in hindsight only, because, let's be honest, it's been a boon for automation), but their constrained nature makes it easier to reign in the zealous junior developer who just discovered OOP and insists on trying it everywhere...
I don't think this is true anymore. Junior devs of today seem to be black pilled on OOP.