And the "intelligent" part makes them realize that you get absolutely nowhere if you try to strictly follow all rules (there's a reason why "work to rule" is an effective sabotage strategy), and that the path of least resistance is to sign and ignore it.
It’s not unjustified. I’m a tenant. I don’t read all of the clauses. I’m a normal well meaning intelligent person. Does not change anything about what I said.
A large majority of humans don't read EULAs.
A lease clause is useless for liability, because your landlord's insurance won't be able to shake down the tenant anyway.
Someday soon enough, your insurance might require a clause like that. It will still be ignored by tenants though.