I can't say I've ever turned the TV off when someone visits, it would never cross my mind to. Just like the displays on trains, I forget they're there, totally tune out to them, and the announcements too.
But then I always have something on as I like background noise, silence is awful.
I guess that's half the problem: if you can you don't see the problem, if you can't you don't see why other people don't see the problem.
Me, I'm pretty good at tuning out the
information content completely, so there are just these words going by but they might as well be in a foreign language for all they actually convey to me. But the presence of a lit-up moving thing (which would include the clock with the luminous pendulum, if such a thing existed on trains) or a non-constant noise made of varying sounds (of which speech is a prime example) is infuriatingly impossible to tune out.
I expect you'd be one of the people who would insist on having the radio on all day in the workshop, and have me wanting to smash the thing before half-way to the morning tea break
Either way, though, it's still an important lesson for the pro-announcement enthusiasts: the response they elicit is
not to take note of them, it's to try and make them somehow or other not exist. Whether they're annoying or not depends on how good you are at doing that, so people not being annoyed does
not mean they're useful, it means the people who aren't annoyed are better at making them useless.
Personally, I'd say yes purely based on seeing babies/children be tipped out of pushchairs onto platforms by people not alighting trains correctly. Obviously they weren't strapped in but the point it still there, it's not just large gaps that can cause a trip/fall.
Some of the stations I call at have significant gaps/steps and so these have mandatory special announcements. I get why people think if it's said at every station it looses it's focus, but I'd rather say it and hope it stops an incident than not an wish I had.
See this says to me that the announcements are indeed useless. You have mandatory special announcements but you still see people displaying the quite remarkable degree of basic incompetence at everyday actions needed to tip their babies out onto the platform. (Presumably the babies are quite used to being tipped out over every step or kerb they get wheeled over, think it's a perfectly normal way of descending things, and are tough as old boots by now.) If someone's going to be a div then they're going to be a div whether you tell them not to or not, and the more divvy the thing they're wanting to do the less chance there is of them taking note of any persuasion not to.