These generic TLDs were not a good idea, not now, not never...
Perhaps it makes it slightly clearer. Contrary to popular belief, an authoritative server does not need to be authoritative for the public internet. Locally is just fine. Just don't use stuff that clashes with the public DNS system.
if the other LAN members communicate with "linux.home" an entry is supposed to be already present in "hosts" (like) files
Host files? Are you serious? Nobody outside the tech world uses those and even the techs don't use it except for very very specific cases. For the normal users there is DNS-SD (Zeroconf) and anybody more technical is better off simply setting up a DNS server with authoritative zone for the local network (Which is why I hate these new TLDs... My domain of choice might be sold someday and I'll have to give it up using locally... having to use the boring
This is a problem of their making. The generic TLDs shouldn't ever have been introduced.
Would it be so hard to have a page called "report bugs" where you can, call me crazy... report bugs?
There is simply no clear way to give feedback. At least, I haven't seen it.
It is easier to write an incorrect program than understand a correct one.