I don't know about the DTV but for marriage and tourist visa, I have used my drivers license to establish residence and my passport to establish nationality.
, I appreciate your "opinions" but Thai immigration does not.. Sorry! I am sure one day they will call you and ask what they should do, but until then, it is safe to assume your opinions have no influence on their decisions.
When you come to Thailand you will see there are the written rules and then there are teh enforced rules (probably the same for most every country).
Here in Thailand you will see people driving down the wrong side of the road. You will see police taking bribes. You will see many government take bribes. It may not be fair or right (according to your opinion) but it is what it is.
If you're not comfortable with the lease, don't rent it. There is a reason it's 8 pages and when that reason becomes clear to you, it will be too late.
To answer your question: I have had 2 places no lease, one place several pages and one place one page.