Wow, that's interesting, apparently 10th gen Pentiums and Celerons don't have avx. The wonders of product segmentation. They apparently corrected course (and also gave consumers AVX-512) in the 11th gen: https://www.tomshardware.com/news/intels-latest-celeron-and-...
There's a related discussion on hn from 2020 about lack of AVX here https://news.ycombinator.com/item?id=24577069