If you just ask it without context, "today we'll close at 16:00" is a perfectly reasonable response.
But for mapping lots of POIs this is a PITA and doesnt scale. What if the owner declines? This is non-copyrightable info anyway.
Shall one ask house owners if one can map their address or their house' outline?
Unfortunately there's nothing to aggregate current traffic information (traffic jams etc.) as far as I know.
The maps themselves support all sorts of routing options for walking/bikes/cars, at least: https://wiki.openstreetmap.org/wiki/Routing#End_users:_routi...
They also have a Wiki page on public transport: https://wiki.openstreetmap.org/wiki/Public_transport
Sadly, they don't even attempt to have public transport schedules on the main maps, whereas Google has even added inter-city buses in some places, as well as having an integration with Bolt or other platforms I think.
That, in addition to the lack of business information, business hours, reviews and so on makes OSM a bit inadequate in comparison, which is unfortunate. There have been other maps that build on top of OSM data (which is great), but they're still pretty small in comparison.
It would be interesting to see how OSM would fare if it actually tried to compete with Google: 1st party Android/iOS map with some open dataset for business information, integration with some review platform, aggregated public transport maps with an underlying open dataset and stuffing their pockets as much as possible with money from Bolt/Uber/whatever to ensure longevity of the platform, by adding helpful suggestions for trip routing, as well as aggregating traffic data.
What Google is doing is to integrate public transport data (often in GTFS format). It is not mapped directly by Google, and unlikely that it would be doable in OSM (note that in many cities timetables change weekly, for example as result of construction).
There is some ongoing work to build similar things for OSM-using software, for example Organic Maps is at least trying: https://github.com/organicmaps/organicmaps/issues?q=is%3Aiss... (I bet that pull requests would be welcome, especially if discussed with people developing it)