Depends on the needs of who you ask. By now we all know what the industry wants.

It does annoy me how pushy people can be on this topic, which is often debated endlessly on various forums along the lines of:
Rim: lighter, easier maintenance, more aero, less faulty (Froome reasoning)
Disc: heavier, more difficult maintenance, more expensive, better in the wet

Most serious crit and road racers I know have at least one of each, which has been my preference. No reason to limit one's n+1 options, especially as prices on used high end rim bikes/gear becomes increasingly attractive.

When I fly to Malibu for mountainous 8k+ ft group rides/training, it has been my experience that I'll save 20-30s for every 15-20min climb on my WW rim build. But that isn't the deciding factor... mostly comes down to ease of maintenance while traveling. But of course disc wins if/when I'm riding in questionable conditions. And I've never had issues finding a reputable mechanic if/when my hydro lines need a little help.