alt Hacker NewsSupply chain attacks aren't exclusive to JS just like malware isn't exclusive to Windows, it's just that JS/Windows is more popular and widespread. Kill JS and you will get supply chain attacks on the next most popular language with package managers. Kill Windows and you will get a flood of Linux/MacOS malware.
Maybe language based package managers aren't great. Also, npm has design decisions that make it especially prone to supply chain attacks iirc