For submitter, I sympathize hugely even though I've never gone through it myself. I know myself, and I know if I was unemployed, I'd spend all of my waking minutes either applying for jobs, fretting about applying for jobs, and counting my savings as they dwindle. I would have an extremely hard time enjoying unemployment. I'm sure your situation is much harder, mentally, because you'd have existing successful work history to fall back on.

But +1 to all of these points. Learning to time-box your job hunting and recognizing the declining marginal utility of each extra minute is a useful job skill in and of itself.

Any time you can redirect away from doomscrolling to productive/fun/values-based activities (hobbies, volunteer work (especially if job-relevant, but even if not) is time well-spent. Importantly, it has to matter to you and be enjoyable. If you're timeboxing 3 hours per day job-hunting, and then the remaining hours of your day are grinding away on personal projects because you hope they'll pay off in the job hunt, you're really spending all day on the job hunt.