Okay well for those people who want to rank videos for anything more then extremely low competition, views are incredibly useful; stop saying they are useless.
Here are some statements you've made on views in previous replies to peoples questions regarding how to rank or how to get suggested traffic:
- views from search terms or subscribers with good likes ratio work at least as good as views from social media trust me

- long videos with good retention watch time ranks easy if there is no long videos in your niche.
- make lot views with good watch time retention and good click rate.
- main factors : watch time retention click rate traffic source
- no magic secret, views from good source with good retention and watch time
- will help but also depend on views.
- good content good retention watch time click rate.
You state several times that watch time and views are ranking factors. If watch time is a ranking factor, why would it be useless to boost a videos watch time with purchased views? You also say that views from search terms are good; did you know that there are many views services that send traffic from both search and suggested sources? If search traffic is good, why would it not be good to buy views that are from search traffic sources?
You can't say that views from good sources with good retention and watch time are good for ranking, then say that it's useless to purchase views that are exactly those specifications. It sounds like you've never purchased views before.