No, that is complete absolute shit post that isn't even self coherent. Like, it literally whines about needing something that can be "independently chosen, changed, and rotated", which obviously describes usernames so obviously biometrics can't possibly be usernames by that very post! Why is this dumb meme so fucking persistent? Fingerprints are one of many biometrics. They aren't usernames, which aren't an authentication factor at all. They aren't passwords. They aren't tokens. They are their own thing. They have their own pluses and minuses as part of a comprehensive response to a given threat scenario. That's it. Trying to shoehorn them into something else is the same as trying to shoehorn everything into a car analogy.
All security exists solely in the context of an equation of threat scenario (the word "threat" doesn't even appear in that post), defender vs attacker resources and the value of what is being defended. Real security must work for actual real humans too. For example, rotating passwords every day/week/month is "secure" except that it's also a huge PITA or even outright impossible for many humans and defending against what should be a non-existent threat scenario anyway. So the obvious and inevitable result is that everyone starts to use crappy passwords, write them all down on sticky notes and text files and such everywhere, or both. That is not the fault of the users, it's the fault of a shitty system.
Another word that doesn't appear in that post? "Camera". Biometrics is an enormously rich potential field, fingerprints are about the worst lowest hanging fruit and in no way represent everything particularly as we use more and more wearables (there are bits of entropy to be found in your body's cardiac cycle for example). But even for fingerprints, which is really lower resource for attackers: getting a reproducing a fingerprint, or having AI go through every single networked look-down camera for the obvious obvious pattern of a human pulling out a slab of screen and then entering a PIN or passcode into it then recording that? Are people expected to never ever unlock a device anywhere but a physically secure area? Because see above, that is not realistic for real humans and thus a worthless security response.
As is usually the case, the best answer is hybrid, with multiple levels of factor usage to try to combine the strengths of each. And indeed that is the way things are going.
Edit to add: And if I sound irritated about this I am. This is the same kind of user hostile shallow anti-security thinking that brought us things like "security" questions, password rotation policies, lengthy and baroque "must contain 2 caps 1 number 3 special characters but not those special characters and cannot START with a number" password policies, etc. All of which add aggravation and failure points to no good end. Bad security practices affect our entire industry to the detriment of us all, but "bad security" isn't just a technical thing it's a human UX thing.