I have a fraught relationship with 1:1s. Some days I curse the MBA who came up with this. Some days I'm rather ambivalent. Doesn't help that I'm naturally introverted and 1:1s is just a leech on my limited social battery. It's rather telling that IME 1:1s are the first meetings to be cancelled when the schedule tightens up.

I'm not outright saying they are useless but 1:1s won't make a bad manager good and they're a nice bonus when your manager is competent. In the latter I actually get career and professional guidance.