The author found something that works for them, but for some folks who have working memory issues (i.e. ADHD), using visual cues as reminders is one of the top tips in ways to address the issue. This can seem messy to some, but for those that need it, it is a lifeline. As a contrast to the author, if I put something in a drawer, it might be months before I remember it, even if it was something that absolutely needed to be dealt with (and yes, there will often be consequences of having not done the thing, and this has to be balanced against leaving everything out which isn't good either). Electronically, if I close Slack/Teams, I might go hours before remembering to open it and check in - maybe great for focus, not so great for team work.
I've found that for me, spreading things out and having visual cues allows my brain to relax and focus on the task at hand, because I know I don't have to use a memory slot to remember to do something that I don't have a visual cue for, because every so often I see that cue and know it isn't going anywhere until I have time to deal with it. Almost the exact opposite of the anxiety the author describes. (And before it's suggested, yes, I also take notes and put important tasks there, but it isn't as helpful for my brain to let something go compared to having a visual cue.)
I've found that for me, spreading things out and having visual cues allows my brain to relax and focus on the task at hand, because I know I don't have to use a memory slot to remember to do something that I don't have a visual cue for, because every so often I see that cue and know it isn't going anywhere until I have time to deal with it. Almost the exact opposite of the anxiety the author describes. (And before it's suggested, yes, I also take notes and put important tasks there, but it isn't as helpful for my brain to let something go compared to having a visual cue.)