Coding something quick within an hour? "It's too time constrained."
Take home interview question? "It takes way too long for the busy professional who already has a job, and plus, even if we time constrain it, they'll put way more time in. Or they'll cheat with friends."
Ask to see previous code? "Many good candidates do not do open source and couldn't tell us what they work on in detail due to NDAs."
Don't use automated interviewing for initial rounds? "We are wasting a lot of expensive engineering time on poor results"
Just ask about work experience and make a subjective call? "We don't know if they actually know how to code, and it's way too random, prone to bias and opens us to lawsuits."
Use different interview methods for different candidates? See above
Watch over a person live code? "Too anxiety provoking". Don't? "How about cheating?"
Trial to work for 2 weeks? "Immigrants cannot do that, and people wont leave their stable job for an unsure offer. So only the unemployed could do it, and why are they unemployed?"
etc, etc
Also there is the entire mountain of going over glacial HR departments and getting them to change their interview processes.
I agree leetcode is shit and I made it a personal mission to change the processes at work to remove the leetcode and add more work sample interviewing, but it's difficult!