Wow, you're right, 10th gen Pentiums and Celerons don't:
https://ark.intel.com/content/www/us/en/ark/products/199285/...
https://ark.intel.com/content/www/us/en/ark/products/199290/...
AVX2 is supported with i3s:
https://ark.intel.com/content/www/us/en/ark/products/199283/...