Changes in 2020: Do follow vs No follow

I was debating with a friend about the importance of nofollow links.

I'm thinking that a nofollow link from a new referring domain is bringing about 20% the value of a do follow link from this exact same new referring domain.

My friend is thinking that it's about 5%.

----> What do you guys think and what does your experience tell about it ?? <----- Is 2020 very different from 2018-2019 in your opinion ?

I know, as said in this video at 1min:



So: from late 2019 google change his functionement and add a "REL UGC" or a "rel sponsored" tag to your links...
Have you guys ever tried that ?

Peace

Google does not transfer PageRank or anchor text across these links, In general, google don’t follow them.
but they can still have an indirect impact because, they help to diversify your link profile, and they drive traffic for your website and traffic can drive followed links.