Except he didnt predict 0-18, he said something like it wouldnt be that surprising if it happened, I cant find his exact wording. He literally picked TL to come 3rd in their group in his pick ems. He was wrong about FQ, but right about TL & TSM. He was about the same rightness as other analysts like Dom who predicted 1 NA team to make it through groups on average. Dom predicted FQ to come 4th and TSM to come 3rd IIRC.
Edit - searched for an hour, cant find it. Closest I can find is "TSM might go 0-6", where the host predicted SN would come last in the group. LS deserves credit for predicting SN #1, and Rogue #4 which surprised a lot of people. It's easy to cherrypick when an analyst gets it wrong, you have to look at the whole picture to be fair. If some1 can link me the clip where he said NA 0-18 I'd appreciate it. I seem to recall Frosk was there but could be wrong.
My mistake, it's actually 1-17. This is from the lolesports Twitter predictions, where there's one for each game played. His one NA nod was TL > Machi the first time.