Snap interview questions

It's clear to me that they don't train people to interview properly and leave a good candidate experience. Half of the interviewers were very dismissive and acted like I was wasting their time. The interviews were really difficult, they expect you to write working code of very complex problems and make it work within the timeframe for 100% of use cases (and run it to prove it). The worst thing is how bad the interviewers act when you can't get there, it's plain and obvious and they start being dismissive in a very obvious non-hidden manner. Had interviews where I did bad in the past but generally interviewers know to act nicely and provide a good candidate experience. Not Snap!