There was no whine, sorry if you are so used to hearing it that it has permeated your comprehension. I speak with a sense of pride about my experiences. I respect the land owner as the land owner, it is their property I am being allowed to use and I have no claim on it outside of the rental agreement, which has an agreed to beginning and end.
What happened is what I would expect in a sane world. The owner sells the house, the new owners don't want to rent it, and your lease is up. Time to move. The owners want to increase the rent, the contract term has expired, you don't want to pay that much, time to move.
Why would I expect any different, that is an example of sane world to me. I don't want handouts or the nanny state to protect me. I agreed to a one year lease, anything after that is a risk on both parties. It was uncomfortable to move but each time led to a better situation I may not have instigated on my own. in hindsight they were all positive catalysts for change.
Also, I am not knocking the guy looking for help, I, like most others here including yourself, am voicing my experience and opinions about SF's renter laws.