The biggest issue with Obsidian (for me) is that to get most out of it, you have to rely on plugins, which is a huge security risk.
Yes, if all I store in it is exercise logs and cookbook, no big deal. But any information that can be used for identity theft or social engineering, any financial data etc. is exposed to every single plugin, and the user just has to trust that an anonymous entity hiding behind a pseudonym is an honest developer and not some punk itching to do some harm just because they can.
I have realized long time ago that the information that I intend to store for a long time needs to reside in a common format, and preferably inside an encrypted container. Most modern OS now have some kind of indexed search functionality, so there's no need for a "wrapper" type Notes app around your data.
To take notes, Apple Notes is just fine. Onenote is great if you want to stay cross-platform. But to store info long term, PDF / Docx / Excel / plaintext files rule.