To give a serious answer, landlords have a material class interest in conducting the unearned expropriation of rents from workers/tenants (and to be honest, literally everyone who isn't a landlord). Even from a classical liberal perspective (i.e. Adam Smith) landlords have done nothing to merit these rents, they've simply partaken in the principal expropriation (that is, the expropriation of what once was and ought to be the provenance of all people, the land and nature more broadly). Landlords do not merit the revenues of their property, since any revenues they obtain are generated from the value of the property itself: all the landlord does is own it (i.e., "passive income"), and that ownership was/is established by a system of violence. In the modern day, landlords rely on the state system of violence to protect their property and force others to fork over rents to use it, which is a change over the original landlord system, where the landlord and their armed flunkies would have to do it themselves. So, an individual landlord can preach liberal platitudes, but when it comes to the fundamental economic relationships, their existence as a class is predicated on the preservation of a fundamental/primordial injustice and the deprivation of their fellow human beings.

In summary: