I had the exact same concern. Where’s the support for these ideas?

Ended up Googling it for awhile today and got linked to a podcast that had some decent practical tips for reducing burnout (towards the end of the podcast)

Link: https://podcasts.apple.com/us/podcast/how-to-be-a-better-human/id1544098624?i=1000601831170

Beyond that, though, burnout seems kind of vague and much of the content around it is either worker-focused (you’re burned out because you don’t believe in what you’re doing for a living) or employer-focused (you should be watching out for signs of burnout in your workforce because it hurts productivity).

The best things I found basically recommended having strong boundaries in place to make sure your work and personal life don’t blend.

¯_(ツ)_/¯

I had the same feeling. In terms of contents, the examples seem to be fashioned after the Maslach Burnout Inventory but their description is a sometimes off and would fit depression better than burnout (which overlap, but the latter is work-specific). The MBI is also much more extensive and requires a more nuanced response to each example (not just yes/no).

Generally, you should never interpret these graphics as some kind of diagnosis. An actual diagnosis requires a trained therapist, who may use tools like the MBI to help with this but not as the sole foundation of the diagnosis.

Edit: The danger with these kinds of infographics is that they're simplified so much that basically anyone can recognize themselves in them. Most people feel at least some of these things occasionally. That's normal and doesn't automatically mean you're suffering from burnout.