This is the worst description possible. Increasing taxes doesn't address homelessness -- doing something with that tax revenue does. I just read over Prop C and while it's not the most clear proposal, it doesn't seem unreasonable, and isn't very hard to actually ... summarize its effects, not just hint at the end goal.
ETA: Prop C would add a 0.175%-0.325% tax to large companies, which would go to: administering the taxes, permanent housing (short-term rental subsidies, construction/acquisition of apartment buildings for the homeless, operation of buildings for very low income households), homeless shelter expenditures, homelessness prevention expenditures, mental health expenditures for the homeless.
ETA: Prop C would add a 0.175%-0.325% tax to large companies, which would go to: administering the taxes, permanent housing (short-term rental subsidies, construction/acquisition of apartment buildings for the homeless, operation of buildings for very low income households), homeless shelter expenditures, homelessness prevention expenditures, mental health expenditures for the homeless.