I think its better to read that section the other way around: if you have 10+ years of experience, you should be in the level 3 bracket in (at least some) other

I think its better to read that section the other way around: if you have 10+ years of experience, you should be in the level 3 bracket in (at least some) other sections. If you're a first year programmer, it might be acceptable to be in level one in other categories.