The desktop wiki feature is awful, but it's awful in the same way that any of the pseudo-markdown for setting in teams is awful. The WYSIWYG editor constantly doesn't recognize backtick monospace formatting, or is overzealous in hijacking the cursor when you are trying to type adjacent to monospace formatting. The enter key seemingly arbitrarily makes either newlines or continues to the next section. I've spent a few hours writing wiki entries this last week and it does not spark joy to the point where I wonder if anybody who works on Teams wiki functionality actually has used it.