[rajacombinator]

Knowing obscure data structures or specific algorithms is rarely useful. But if you can’t do well on leetcode type problems it indicates a poor fundamental understanding of algorithm design, which is fundamental to the profession. Honestly it’s surprising you can work in the industry for 6 years without knowing this. It would be like, say, a radiologist working for 6 years without ever studying human anatomy. So, yes, you should study these topics.