Yeah but do we have any idea if they can still identify a console without prodinfo ? It's been years and I have never heard news about that.
I can understand why sciresm thinks it's just overkill. At the time I did it there was no other solution (other than maybe 90DNS iirc) and tbh, I'd rather have something more permanent than something that relies on a config file that could be overriden after a dumb mistake like a manual update.
I don't mind bombing my emunand as long as my sysnand stays clean. Tho whenever I have to use homebrews on my sysnand for saves or something, maybe exosphere comes handy ?? I don't even know if it does anything, if it helps not showing too much to Nintendo or not, but I guess that's better than absolutely nothing and maybe that's thanks to that that I haven't been banned yet (helped me not being paranoid when launching my sysnand with atmosphere)
What nintendo is currently using, and what they could use are two different pairs though.
Currently they don't seem to try to identify consoles with a blanked prodinfo, probably because a lot of requests don't even go through with it blanked, if I understood it correctly.
Nintendo also doesn't seem to go after homebrew only people, since you can go online with blanking disabled and atmosphere active just fine, as long as you don't install any nsps or xcis, which is what atmophere targets to allow anyway. This is also done by many people, including atmosphere devs and myself, many never even booting stock anymore.
I would also suggest against using exosphere blanking on the online nand, since while probably nothing happens, it might result in some extra traces somewhere, in case somethings logs the serial number somewhere.
There is also the component of human error.
For example a person might accidentally blank their sysnand instead or their emunand, resulting in them running in a lot of potential problems.
In case someone makes this mistake, with exosphere at max they leave a small trace somewhere, while with persistent blanking the worst case is that they might loose all online access forever.
On the other side, with other precautions already active (like dns blocking) disabling exospheres blanking by accidents doesn't result in any problems at all.