[data4lyfe]

1. Technical interview prep companies give structured learning and practice to people that aren't good with structure.

2. Algorithm technical interviews provide a structure for companies to compare skill levels of different candidates against each other

3. Neither is the best scenario for either party but in a chaotic world without structure, each one is trying the best they can towards filling a job role by meeting with someone in a span of 45 minutes.

Personally as a founder of an interview prep company for data scientist (https://www.interviewquery.com/), I find that we try to just teach candidates concepts through bite-sized problems and repetition. Some people might hate it, but we're essentially playing the game that the companies are holding up. So you might as well learn to get good at it.