noooooooo don't do it. Sigh. How many times? You can't cheat the youtube people. They are 'all knowing'! Like the Matrix!
Of those things suggested I don't really know what they are on about for the first one.
The second one re optimize video file only serves to evidence that they don't know anything that can help you because.. You are severely limited in how you can optimise a video after its already been uploaded for a while. To my best knowledge you video is also influenced by how people interact with it, what they watched next or at all, how long they stayed etc etc. Those historic behaviours are influenced by the quality of your content and already acknowledged.. and so at best all they can do for you is suggest better tags and titles or thumbnail which can't influence wether the content of the video is liked or engaging for the viewer. A video which is of poor content/value will always have many factors keeping it down no matter how good your seo.
Embeds on fabricated fake blogs/ accounts websites are of ZERO value as they only exist for no purpose. And if they were real blogs etc absolutely nobody would read them if they were constantly spammed with irrelevant links to youtube that people have purchased.
The other things mentioned don't even warrant a response.
Also.. driving/forcing traffic (if it could be achieved) is harmful to your videos as the random viewer (very different to a targeted viewer -i.e someone actively looking for specific content) would give you mini views of very little watch time which in turn harms how your video is promoted across the platform as youtube will think that your video sucks.
These scammers survive by fancy marketing and empty promises. They tell you what you want to hear- and you convince yourself its true because you want it to be true.
Hope I might have helped. Just make good content and think about best SEO practices as your making the video.
