Originally Posted by thommy

I think you misunderstood this information from google.

rel="sponsored" and rel="ugc" are just ADDITIONAL attributes that can be used alone or together.

the nofollow attribute still makes a lot of sense if you mark ads, external links that you do not want to be part of your content and internal links that are not relevant.

if you use rel="ugc" means that you recommend this as a relevant link to a user generated content.
if you use rel="nofollow ugc" means you tell google that this is user generated but you do not want the content as part of your site
if you use rel="sponsored" you just tell google that someone paid somehow for it but you see it as relevant to your content
if you use rel="nofollow sponsored" means that someone paid for it but you do not want that google counts the target as relevant to your content.
if you use rel="nofollow" it can be whatever else that you do not want to be counted to your websites content.

the big misunderstanding is the standard html-attribute "nofollow".
regarding to W3C it was basically created to prevent searchengines following this link.
but it is not how Google understand it. Google just does not count this link as an information that is connected to the site´s content but follows.

the rel-attribute is standard html and there are many others that can be used to display the hypertext dependencies of an HTML file (i.e "alternate" "author" "copyright" etc)
Google just extended them for their own logic with "ugc" and "sponsored"