I think a lot of people are unaware of how easily you can achieve blind deconvolution on many images blurred with most blur algorithms and even real-world blurr

I think a lot of people are unaware of how easily you can achieve blind deconvolution on many images blurred with most blur algorithms and even real-world blurring effects (including motion, out-of-focus, etc blurs). The results won't be perfect, but they are usually close enough to see much of the detail that appeared to be lost. I never use blur to obscure sensitive information; black that shit out (and then also make sure you aren't saving it as metadata or in a layer) or just replace it with fake data.