I really like Notion and use it for many scenario. However, I'd be very careful of not having your own format and/of the content that you should be able to walk out without much pain.
I have heard of some people who have moved bag and baggage to Notion to even replace the likes of Dropbox and Google Drive. I'd be extra careful of being so tied to something you can't switch easily or walk out to another platform/tool.
Please do keep in mind how Evernote went from a plan of a 100-year note-taking to "what went wrong with that company".
The ease with which data can be extracted is subject to change. It changed negatively with Evernote when they limited at 50 the number of notes that could be exported at once. This made it very hard to do for any reasonably-sized database. Fortunately there was a workaround which involved editing a config file but this was likely not something an average non-technical user would discover or be comfortable doing.
I have heard of some people who have moved bag and baggage to Notion to even replace the likes of Dropbox and Google Drive. I'd be extra careful of being so tied to something you can't switch easily or walk out to another platform/tool.
Please do keep in mind how Evernote went from a plan of a 100-year note-taking to "what went wrong with that company".