I'll honestly never understand how studies like this make front page or top headlines in mainstream news. Even if vitamin D didn't make a difference with covid outcomes, it's still a vitamin many countries are widely deficient in and can only serve to improve many peoples health.
I feel like I've seen more social media posts claiming to show vitamin D isn't effective vs cv19 than the opposite, which is alarming to me. The body of evidence that shows vitamin D working is substantially larger than the studies showing the opposite - and honestly this is a vital vitamin either way! Get your vitamin D levels up people*! It feels like this shouldn't be controversial, but deficiency in first-world countries and posts like these make me wonder.
* obviously it's possible to overdose but that window is incredibly large - you're far more likely to be hurting from too little vitD than too much
this image summarizes the intent of my post pretty cleanly https://i.imgur.com/ySVX5y0.png for a nice tl;dr;