Can work in a fast paced environment but if you work on projects or ideas with hard numbers for years its not applicable or your brain capacity is off the charts.
Yeah 100%, I forgot to mention the above is just for my private projects so a lot of notes went into as comments.
For work we do use Confluence but again the quality of our notes are not great. From my experience the most important notes are the ones that tag a PoC if issue X flares up.