One doesn't prevent the other...
This is a big event as NAM with a lot of equipment manufacturers.... Visitors (some) are just waiting for trying material and discovering the news...
Teasing --> Big Show --> Utubers at the show (and visitors) --> Null test Utubers at home ; the process is complete
That's why companies still do the shows. The media comes to the shows and new things are put out on their press releases.
All these press releases show up on google searches, and in news feeds.
But yes, advertising on social media and Amazon is still required (Pay Per Click) if you want to sell anything.