

I think this is not a clean cut case of evil planned obsolescence. There are valid security concerns, as browsers are a common attack vector. You should get that updated, also to protect your privacy while surfing online. So for a banking site or similar, I kind of get it. (I recognize there is a possible conundrum when people can’t go bank in person because the bank no longer has branches and/or get excluded by their old hardware/economic reasons from doing it online. Should they be able to choose risking it if the bank knows about a flaw they then leave exposed? Shit’s complicated.)
That being said I’m sure this banner of corporate concern was not primarily motivated by the security and privacy of their users.






Even for a non-bank website, I imagine there is an octogenarian federal judge somewhere in the States who is still puzzled by fax machines who made a ruling holding website owners liable if they didn’t do this when they know of any vulnerability that could affect the user. So there is a possible legal angle as well.
The people who use browsers other than the ones listed will either never see this message or know how to upgrade on their own.