I still feel that while the info is good and accurate from a technical POV, from a practical user POV, it is not unreasonable to think these are not FOSS tools because they may as well be for how users depending on privacy forward tools, apps, and services choose the right tool to circumvent and obfuscate and therefore retain access to the free and open internet with free speech.
This is more of a philosophical deduction as I see it anyway - as you’re only “affected” if you are one of those developers who would actually fork/want to fork all these tools, make it your own to use it yourself.