I think the argument is that if at some point Proton services get compromised, or if Proton somehow turn into the bad guys, then using fewer of their services will impact you less or give you more time to react. The same goes for any other vendor, of course, which is why the way you address this is by spreading your trust across different services/regions/owners/....
So the two-factor authentication apps shouldn't be on desktop argument never made sense to me, mobile is the same way.
I think that argument was rooted in the assumption that the phone was a separate and smaller attack surface. The assumption is reasonable if you use your credentials mostly on desktop and only have a few apps on your phone, which was indeed the case for a lot of people in the past.
But nowadays, a lot of people use the same credentials on the phone just as well, and with everything asking to install their app, I'm not sure the attack surface really is smaller anymore. So, if you're in this scenario, I agree with you that you may not be sacrificing much by having 2FA on desktop.
And, of course, 2FA, even in the same password manager, is still better than none. Your first factor can be stolen in more ways than just compromising your machine, for example through data breaches.
About halfway through the article they quote a paper from 2023:
Similarly, another study from 2023 found LLMs “hallucinated,” or produced incorrect information, in 69 to 88 percent of legal queries.
The LLM space has been changing very quickly over the past few years. Yes, LLMs today still "hallucinate", but you're not doing anyone a service by reporting in 2025 the state of the field over 2 years before.
2FAS and Ente are two open-source alternatives on iOS.