Okay, let's back it up to the simple part - which isn't to say anything about you, but things went in several different directions.
Right - leases are credit-like, somewhat. However, leaving aside the concept of eviction taking time (that to me is investment risk, not 'extending credit') - lease payments are made in advance, and when I was a tenant, every single one had a clause allowing for termination in the event that prompt payment was not made, in advance.
My objection there is that these payments should not be being reported to Credit Reporting Agencies because they're not credit.
And as supporting evidence, if they were credit, every tenant for decades would have every lease or rental agreement being reported as a matter of business. Why has that not happened? Because it's not credit. And now, some "innovative" companies are offering to work with Property Managers and landlords to offer it as a "service" to their tenants.
However, you look at things and very quickly you realize the benefit to the tenant is almost a side effect:
These services charge a fee to the tenant, a portion of which goes to the landlord (can you say kickback?), and if you look at the websites of these services, the "allow your tenants to record good payment history on their credit report" is but one bullet point. Every other bullet point talks about the benefits to you as a landlord.
You mentioned landlords doing credit checks to establish a sense of the tenant's fiscal responsibility. I think that is fine. As for evictions, damage, deposits being withheld, and so on - there's a need for that. And it exists, entirely separate to the CRAs.
This whole thread started because of one point, that I don't believe they should be able to report it as a credit tradeline, because it's not. And I still think the single biggest argument I have that that's the case is that it's only been in the last three or so years that this has been offered, when credit reporting has been around since the 1980s.