Yeah it's the hype, today Notion is the go to tool for PKM, the same Evernote used to be a few years ago and the same others used to be before Evernote. For some weird reason people prefer to all use the same product, and instead of having a bunch of users on Evernote, a bunch on Notion, a bunch on Roam, a bunch on others. They all migrate to the current hot tool
Whether it's Evernote or Notion, they are great products, but nothing revolutionary. The major difference between Evernote and Notion is that Notion has managed to get a good chunk of their revenue from companies. This should make them more durable.