I agree with 2 and 3. Tipping should not be a mandatory part of someone making a living.

Regarding 1: How does society guarantee a worker gets sufficient compensation for their work, and receives enough money to live in the area where they work in order to afford housing and food and healthcare?

We see trillion dollar companies paying their workers minimum wage, and scheduling workers below full time to avoid providing them benefits. We subsidize Walmart when their workers need food stamps to survive. Without a minimum wage it would be even worse.