I wouldn't worry about yellow dots on an old black and white laser printer, but more imporantly: the tracking is meant to track a printout to a certain printer. Printed seed phrases aren't meant to be shared, and even if someone would get their hands on it, they wouldn't be interested to know which printer you used. They would just take your money.
I don't worry about it because I don't use printed seed words, and i don't want invisible yellow dots anywhere on my papers.
Using passphrase with seed words would make job harder for anyone who wants to steal your coins, but they could identify computer and printer you used, with exact details about time, date and maybe IP address.
However, there are some printer models that apparently don't display tracking dots:
Some of the documents that we previously received through FOIA suggested that all major manufacturers of color laser printers entered a secret agreement with governments to ensure that the output of those printers is forensically traceable.
https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking-dotsLong time I ago I remember printing some cd covers on my old printer and they all faded a lot, this could be because of cheap ink paint, but you get my point.
I prefer toner over ink.
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I prefer hand and pencil over toner.