Your comment reminds me of skipping to the end of the review just to see the score the reviewer gave, instead of reading the whole review."Overall, using the GRADE framework, 22 pooled analyses were rated as low quality, with 19 rated as very low quality and four rated as moderate quality."
Having low confidence in the actual outcome of the analysis is clearly the sign of multiple factors that are at play here, which is why they surely cannot pin-point that UPF is the main culprit. That is exactly why have stated multiple times the word 'risks'.