Sound advice except for one thing. Not everybody can draw or will ever be able to. People always say, “Oh, but you can learn.” Sure. You might not ever get all that good though.
Let me put this another way. Some people are born amazing singers. Truly gifted at what they do. Then they pick up a guitar or sit down to write music and, well, they suck. They might be able to get better with practice, but their playing and writing will never even come close to that innate singing ability.
Some of history’s greatest artists were good at some forms of art, but not others. More over, some of the CG’s best character artists are simply terrible when handed a pencil or a paintbrush. Conversely, some of the most amazing concept artists will look at ZBrush with utter bewilderment and, even with practice, might only get “just good” instead of great. It just happens.
There’s an almost unreasonable expectation in the CG industry, specifically those looking to get into it. Even as a specialist, your peers will expect you to have a certain set of skills, like drawing, that you simply don’t have and may never will - even with loads of practice.
When it comes down to it, unless you’re specifically going out to do concept art or some other form of 2D, drawing isn’t as necessary as some might think. You can be perfectly amazing in 3D without being as good in 2D.
Ideally, you should be able to at least get a rudimentary concept across on paper before you sculpt or model, but nobody’s expecting you to be van Gogh. If you can’t even convey an idea then that might be an issue. Drawing like a 5th grader? Not as much of a deal breaker as one might suppose.
Some people are amazing across the board. Great sculptors. Great painters. Great sketch artists. Just… great. Most artists aren’t like that. though… not even with years of practice.
With that said, going in, as a beginner, you need to understand where your natural talents lie. Explore for a little bit. Don’t be afraid to make mistakes. Practice as much as you can. Ultimately, play to your strengths. Work on, but acknowledge your weaknesses. ALWAYS try to be the best at what do well. Employers would rather have somebody who’s amazing at one thing over somebody who’s just mediocre at everything.