Absolutely - total trash statement. Landlords want tenants who a) stay, b) don't damage unit, c) pay rent on time. THAT is a guaranteed money maker. The overhead of flipping a unit in landlord time is high. You've got eviction, cleanout, repair costs, showing costs, lost rent, landlord / management co time etc etc.
In CA you can only keep portion of deposit used for repairs, you can't use it to cover all your other overhead costs on a flip. So you are guaranteed to lose money on the flip relative to renting it.
All the gravy comes when you can keep that tenant, keep unit in good shape with little work.
The big money is going to be to the folks who are successful with actively screening tenants. I know a landlord, basically upmarket, everyone I think kept paying the entire pandemic. Now that is gravy (she refinanced a ton of the properties down to rock bottom rates, got bailout money for prop mgmt staff, and is collecting rents) - that's pure goldmine