Or worse, you tell the tenant no and they hire a lawyer and put you in front of a jury of woke millennials who want nothing more than to punish an evil landlord.

Do you expect another group of people like the  millennials who would traditionally buy, suddenly decide they want to rent? 

I'm copying your name from your post (I can no longer call myself a millennial).

Plus millennials will often be the biggest renting population in SF and their affordability is less especially the younger portion (age 30 and below) of the population.

The millennials alone dwarf the boomers in terms of population and with gen z right behind there are many people prepared to buy the boomers' homes as they die off.

Millennials are just starting to buy their first homes and investors are a dime a dozen now jumping on cheaper homes which is causing the price point to go way up.

a new couple, a pair of millennial friends?

Additionally, as the number of millennials entering the housing market grows, there is a growing demand for homes that are smaller and more affordable, as well as homes that offer innovative features and technologies.

If the tenants you plan to rent to are millennials or professionals without kids, they will most likely be living inside the perimeter and using public transportation.

Most of the residents look like millennials and young professionals, and they've seen my place transition from something quite unsightly into a very nice place.