> The problem ends up being, that I don't have any guarantee that the other side will spend any time on it.
This is a key thing for me. I consider it a moral obligation to give material feedback to anyone who does a takehome test for me - to invest at least some serious time evaluating it. Likewise, I would never give a takehome test until the candidate has at least had a phone screen with someone at the company and there's some level of investment on both sides.
On the other hand, I know a few junior devs right now who are submitting resumes and getting sent takehome tests off-the-bat. And, of course, after spending hours on those challenges, they get only form-letter rejections. I understand why companies do that - there's a glut of junior devs right now and any early-career role gets flooded with resumes that you need to somehow pare down - but I still consider it unconscionable.
I understand why you might not want to risk dealing with that.