All these companies are in layoff mode but because they are trying to be frugal during the recession but none of them actually want to layoff that talent, each of which was one of 100 or of 1000 resumes sent to the company. Google gets 3 million applications a year and still has trouble finding people that can do the jobs they're hiring for.
Queue rant about how the interviewing process sucks.
Maybe it does, but of the people I've interviewed only about 1 in 10 is a clear "yes, this person can code well", 2 are "probably ok" and 7 are "based on the performance/style/etc... from the leetcode question I wouldn't let you near my code base..... maybe you'd rock but you didn't show me you'd rock. You made all kinds of basic mistakes that makes it seem like you don't actually code much or you write lots of bugs. Sorry, I was totally routing for you. I would 100% love to hire you but you failed to show me you can code". That's irrespective of if they "solved it".