That creativity still exists but now no one makes a site about their favourite things. Now it's pretty much always a play to get fame and fortune. If someone likes a show they have to "review" it to demonstrate their superior opinion that's worth subscribing to. If someone likes a game they start a channel where they play it live to an audience. If someone makes a game it's to try and make money through Steam Greenlight or Kickstarter. Even the creative coding scene seems to have shifted to trying to sell NFTs rather than just being about making cool looking things with math.
The passion to make things is still there but the motivation has changed from the joy of sharing what you like making to trying to make money, and that has changed things quite considerably. I think it's had a chilling effect on what people are willing to share.
You mean centralized proprietary platforms where they get monetized doing this.
Upto you to get out of that space now and then. Go watch the communities where kids are developing games, unity, webgl, godot, twitch streamers, VR/AR etc etc. That same energy and excitement of the blog and website era still exists.