Unless you are reading a guide from like before early 2017, the community has stopped using emuNAND at all in the install process for at least a year now.
a9lh may have caused bricked with emuNAND solely because we created an emuNAND, downgraded it to 2.1, then reflashed the emuNAND to sysNAND. Which we very likely won't be doing on switch because it has efuse downgrade protection.
But any modern guide for 3ds hacking will not even use emuNAND or a9lh at all as it's much more efficient to just install b9s and use sysNAND directly due to b9s being great brick protection, to the point of being able to unbrick already-bricked systems.
Oh, and b9s was developed in part by SciresM, who is also one of the main people working on atmosphere