If you have to make money NOW, publishing is likely not the right move, so maybe in that way they're right. This is especially true if you're a newbie author. The likelihood of striking gold on your first ever release and in a timely manner is slim. But putting off creative projects entirely seems unadvisable. You can still write and prepare for a planned release schedule in 2021 or beyond.
You can do content writing, VA work, customer support, and so on online and without a huge barrier to entry. (Making good money with content writing does have a sizable and elusive barrier, but it's also able to be brute-forced with experience and luck.) But if you're in "I need to make a living wage now" mode, choosing today to publish won't get you to that finish line. It might in the future, after some consistent work and publishing, but it's not entirely an industry that responds quickly.