Meanwhile I will take "weird" languages almost any day... Icon (Unicon), Snobol4, Pike, Awk, Pascal. In a perfect fantasy world I'd also hire these people first.
As the article indicates, there's no SO or Google to find solutions easily... You need to read the docs or find some dark corner of the web for help you require. It highlights passion and genuine interest in understanding what you're doing and figuring things out yourself. Whereas your languages are financially job driven... Not curiousity driven; and my issue with that is if you can learn the esoteric languages, the mainstream languages are laughably easy.
I also love weird (/old) languages as the community that exists, however small, are asking 400-level questions amongst each other and not CS-101 topics. There's a nice serenity in not having polluted search results of utter basics.