I use it myself and I'm content with its features and performance. (It fits my workflow. It is quite stable. Tags and backlinks are awesome and scripting yields good results for dynamic tables.) But:

The wysiwyg editor has its quirks and missing features. I. E. In certain cases it scrolls down multiple pages when I just want to move the cursor a few lines.

The full text search doesn't return all results (at least with default settings). Sometimes I need to use grep on the md files.

It is quite slow on startup both on android and PC. Maybe because electron.

He's single handedly propping up the Lemmy user count

It's true a comm made on any instance can be accessed from any other instance on the network.

But in addition to personal preference and just wanting to keep things neat, it also helps keep things more decentralized to help prevent one instance becoming too big for its own good. Aka the .world problem