Probably. But if you are a student outside U.S where the opportunities are an order of magnitude less the only way to even land an interview with these companies is by doing competitive programming. Google selects students through APAC test in Asia where you have to be top n% in the leaderboard to even get an interview. Doing leetcode and all would not take you anywhere in these contests as you are competing with hardcore student programmers who have been practicing competitive programming their entire University life in search of an escape from the middle class. All the persons I know of in my country who works at Google or Facebook got their job through competitive programming.
Are any of them bad developers?
A programming contest, even if you just do the easy problems, can be a more enjoyable way to practice for interviews than reading a book or even going through online puzzles like those on LeetCode.