So far, the only weakness I've found with Obsidian are the tables. Someone needs to build in a killer tables feature. Obsidian is an Electron app; it shouldn't be too hard to build a stripped down version of Google Sheets.
Unfortunately, it's nowhere close to Notion tables or spreadsheets in general. Formulas are very primitive (eg aggregation is either sum or mean), the syntax is confusing, and you have to manually re-evaluate them. Tables are Obsidian's main weakness to me.