How do graduates get away with fake experience?

Codesmith is the SWE place where 80%+ of graduates do this by stretching their resumes. How people get away with it all? 1. Companies not verifying employment 2. The person putting friend's contact info and the friend verifies 3. They use fake pay stuffs or offer letters to verify 4. The bootcamp lies for them for background checks 5. They list group projects as work and have peers from the group project do the background checks 6. The list a bunch of stuff on LinkedIn to get recruiters attention but they don't talk about it to the engineers and they don't include it on the background check.