COBOL is actually not that bad. It can work with SQL, it can have unit testing/integration testing. It can even go on the web (LOL).
But in all seriousness, the bad part about COBOL is lack of context. Most code that is in COBOL has not been touched in decades. And no one is willing to modify because of serous consequences (AKA job ruining errors) that can occur.
I worked with it in insurance and transportation. In both cases, the COBOL was actually pretty solid...but we didnt know WHY we were doing the operations.
Lisp variants like Clojure are being used for new projects (e.g. Logseq) but I'd be surprised to hear of anyone choosing COBOL for a greenfield project.
I took a principles of programming languages course a while back and got to touch on a lot of these old languages. My professor had huge hard-on for Lisp. Don't get me wrong. The simplicity of the language is admirable. But reading and parsing that shit gave me headaches. No me gusta.
I still use Ada daily for my personal projects after having used it at work. I find it compliments my thinking patterns well. My only gripe with it is that they ate too much of their own dog food at AdaCore and now it can be hard to install Ada and gprbuild (due to a circular dependency). Plus gprc stole libgpr and broke some stuff too.
Most of the COBOL material never made it into the internet. Like the actual instruction manuals for the languages. Also a vast majority that do have it on the internet have it under paywall. I notice that anything that is under paywall, the LLMs suddenly dont do as well. I think its because they only train them on the "open" internet.