My TV does have an audio jack. It's a cheap dumb TV. And almost all of my electronic devices have a 3.5 mm jack. You won't find it in top flagship models, but plenty of budget devices still have it.
I don't know what the line is for "flagship" is, but my $2k 4k smart TV (which isn't connected to the internet) also has a 1/8" jack.
I don't know what the line is for "flagship" is, but my $2k 4k smart TV (which isn't connected to the internet) also has a 1/8" jack.