[ed25519FUUU]

Nothing in that article suggest that open source firmware needs to print the yellow tracking dots, or that that feature can’t be disabled by users.

[junon]

I think that's the reason it doesn't exist.

[Fatnino]

The yellow dot feature doesn't exist? It most certainly does. You can see this yourself by putting a darker ink in place of the yellow in your printer.

[Bjartr]

No, they're saying the reason open source firmware doesn't exist is because doing so could allow you to not print the dots when printing.