Earlier quoted context omitted.
I don't think it says "Software not open-source is bad". But more something like "It is marketed as open source but it is not". Developers should be aware that VSCode is not as open source as it claims it is. In my circles, developers could swear VSCode is fully open source without even knowing VSCodium. If people were more aware about this, they might think twice before using VSCode for everything and getting lock-i…
Most developers don't care they just want to get to job done. Many of them use IntelliJ, etc. which is not free software either. Those who care about using fee software already know about these things, because they check before starting to use a new software.
https://github.com/JetBrains/intellij-community/blob/master/...