I just don't have time to play another 100+ hour RPG or slog my way through a FromSoftware game, but I do want to keep tabs on what is being done. Sampling 5 or 6 hours of the 100 hours of gameplay for games I know I am unlikely to purchase was a compromise. Then it became a habit. I now definitely spend more time watching people play new release games than watching Netflix, etc.
And this habit has resulted in me buying and enjoying games I never would have found otherwise.
Demos are limited in that often they’re a short snippet of game and may not be indicative of the whole thing.
The issues aren't sponsorships which are always obvious, it's that content creators are by the very nature of their business model completely audience captured. They don't review things that aren't going to get them clicks on their channels, and if they do they're unlikely to give a truly controversial opinion that conflicts with the views of their audience or sours the relationships with a publisher.
That is the real value of journalism, gaming or otherwise. There's a firewall between the audience and the writer and there's institutional power that gives writers independence. Content creators are, the overwhelming amount of the time, just an amplified version of their median audience member which is why companies love them much more than journalists, and it also means there's zero signal in what they say.
I remember when Kotaku started (long before they were bought out) and they were lauded as being immune to this interference. Same with Giant Bomb, which has now changed hands many times.
I'm not saying the current system is perfect - I'm just saying that my own preference has completely changed. I stopped reading game reviews probably a decade ago and now I have a small selection of creators who have proven themselves to me. They didn't do so by trying to be a YouTube equivalent of game journalism (ala TotalBiscuit or Zero Punctuation) but simply by playing thousands of games. The review is incidental, their primary focus is on playing the game.
The days of listening to the opinion of someone who played the game for 5 hours in a rush to meet a deadline are gone for me. The days of someone shoe-horning reviews into gameplay/sound/ui/audio breakdowns are gone for me. For almost any game I care about there is someone who is just playing it, and I watch them play it, and decide for myself.
The thing with lets-players and different youtubers is there are a bunch of small time ones that like a particular genre and play things around that. If you don't like the ones you're seeing, search around and you'll typically find a number of different people playing the game and putting up on YT.
At some point in my life I started watching people play games on YouTube far more than I play games myself. There are a handful of channels I follow where the creator (influencer?) plays a wide variety of new games completely uncut. Very often, for a single game there are 100+ 30 minute videos of the entire game.
I find this kind of deep-dive into the game to be invaluable. Good creators/influencers make it abundantly clear when they are taking a sponsorship. It is also usually clear when a sponsored game gets 4 videos (total of 2 hours of content) how the creator feels, even if they don't explicitly criticize the game. Although, the better creators will offer unbiased opinions even on sponsored content.
When I compare this to the vast majority of gaming "journalism" that I grew up with, I am more than happy with the new status quo.