I've never seen someone starting at FANG with 5 weeks vacation right away. Lot of of European countries have 5/7weeks when they start working.
You're not screwed if you stop working. You have both long term and short term disability. If you just decide that you'd like to live on a beach or under a bridge, and there isn't an actual problem, ie you choose to be lazy, then yeah, good luck with that.
Personally I don't want my tax dollars helping people who just decide to not work, but that's just me. The government mismanages enough things in the US as it is.
I was unemployed for a bit due to family issues. I switched to COBRA which let me stay on employers insurance. It was expensive but I am sure its not a big deal for software engineers mentioned in the document. Then I got onto to obamacare via job loss exception. So yea I never screwed so to speak.