As long as it's stored in a secure and discreet location, or maybe at the very least, a place that's well-protected then it should be fine. Ultimately, it also depends on the general safety of your area. If your surroundings are relatively free from theft or break-ins, then the risk is minimal. But if you're in a place where security is a concern, it's better to take extra precautions.
In my view, most people are lazy or careless when it comes to web security. For people who have 130 accounts, the chances of them creating a complex password for each service are lower when writing them down in a notebook.
Besides that, the paper can be lost/burned and it would be quite costly to back it up, whereas an offline password manager, in addition to offering greater protection due to being encrypted, makes it easy to create multiple copies with a simple copy/paste command.
I respect if you think storing passwords in a physical notebook is safer and if you have only a few passwords, it might work better for you.
~~ A practical example of how a password manager is much better for creating complex passwords, as it's based on the randomness of the algorithm (I was going to take a printout, but for keepass security reasons, it won't let me)
