8 years is not super old, or even old. It's important to understand software maturity cycles for core components.
It may not be old, but it sure hasn’t caught on much after 8 years. I did remember a lot of posts about migrating cloud functions/lambdas to deno initially, but not much since.
I’m taking the stance that no news is bad news here. If it was good, people would be doing Resume Driven Dev with deno and we would be buried in those articles. Alas.
Also it didn't hit 1.0 until 2020 so it's more accurate to say it's 6 years old.
It's not that old, but it's old enough that it should have gained a bit of traction, it should have been mentioned in more discussions etc. And ultimately adopted more. It's purely a gut feeling though because I didn't run any numbers
"old" is relative term. Given @TheRogue's account is 4 years old, maybe new to field. If so, it feels "old".
I understand your sentiment of justifying not being "old". but you gotta bring up "legacy code".
"Working Effectively with Legacy Code" defines legacy code as code without tests thus hard to change it easily or with confidence.
So either @TheGuardian is discussing about the age of software relative to his/her perspective or confused "legacy code" without understanding deno code base.