Google’s Official Garry Illyes mentioned once again the reason Google releases new link attributes, rel sponsored & UGC Attributes is to help Google to understand the link better. Garry suggested not to use this if used it will help Google.
Further, Garry Added: You need to continue no follow sponsored links but do not need to label them as sponsored. You can use old no-follow as well. Although Google to ignore no-followed links on a few sites.
A month ago, Gary Illyes said:-
Focus on the other part: nofollow became a hint. Ugc and sponsored are icing on top of that cake, and it's one of those things where you don't have to do anything if you don't want to. If you want to help us understand the web better, implement them. If you don't want to, don't.
— Gary 鯨理／경리 Illyes (@methode) September 11, 2019
He mentioned once again on stage at Pubcon
Rel=sponsored and rel=ugc are optional and you don’t have to use them.
— Lily Ray ? (@lilyraynyc) October 8, 2019
Well Guys, with all the above information it is cleared that all new attributes are there to help google now. Do follow these instructions strictly.