CDKTF works beautifully, all the complains here seem to be from salty devops who got pissed the developers wanted something more powerful than the garbage HCL with its even more garbage module system.
CDKTF stacks are great and the construct pattern gives you modularization without all the baggage.
Not stated in the most diplomatic way, but I do agree. Having used CDK (not cdktf) and now being forced back to Terraform feels like going back to the stone age. It is absolutely obvious to me that generating infrastructure definitions from a regular, testable language using all the same tools, techniques and distribution mechanisms that you use for all your other software development is the superior way. Being able to piggyback off of the vast ecosystem of Terraform providers was a really clever move, although I understand it led to some rough edges.
I kind of like it but I always found it kind of clunky how it's ultimately just generating JSON/HCL anyway. For instance, you can't data source then use code to transform and send it to a resource since it has to transpile first.
That also means you end up with things like the language's native JSON not doing what you expect and having to use a special Terraform function call.
CDKTF stacks are great and the construct pattern gives you modularization without all the baggage.