It's ridiculously easy to disrupt low power wireless networks of any kind, no matter what the protocol or standard.
Anyone can make the whole mesh stop working today, even without a password.
Anyone can make the whole mesh stop working today, even without a password.
With a mesh network, the network is much bigger, which makes it important an attacker can only disrupt their small corner of the network.
If you follow the rules. Presumably an attacker wouldn't care about that, and would be happy to dump a few orders of magnitude extra power into their jamming signal.
I think FCC still cares about jamming signals, although they might make an exception for inexpensive mesh networks...