everyone says the 1099-DA thing is going to be a disaster but i can't tell if it's overblown

Keep seeing two completely different takes on the 0 cost basis 1099-DA thing and honestly can't tell which is right. Some people treat it like a non-event, you just attach your real basis and move on. Then there's a steady stream of posts with CP2000 notices for gains they never made, saying it wrecked their spring. Not in the US myself so I'm just trying to get the actual shape of it before I assume it's as bad as it looks. For anyone who's already had a notice or a 1099-DA that was obviously wrong, which was it for you, annoying but fixable or an actual nightmare to unwind.