The original LinkedIn blog they quoted mentioned Squeak.

Very cool, thanks for sharing.  Did anyone get it going on a RPi?  I
tried on a RPi1 but failed the first time, I might try again.


On Mon, Jul 13, 2020 at 2:17 AM Robert Withers via Squeak-dev
<squeak-dev at lists.squeakfoundation.org> wrote:
>
> Hey, what's up? Well, here was a news article that appeared in my google
> news feed.
>
> https://hackaday.com/2020/07/12/making-smalltalk-on-a-raspberry-pi/
>
> Sadly, they do not mention Squeak, just GNU Smalltalk.
>
> K, r
>
>
>