Nextjs 13 update

I am enrolled in many courses, and one of them is on Next.js. I was about to start the course, but a senior told me that it is based on Next.js 13, which is not up to the industry standard. He mentioned that it would be a waste of time unless it is upgraded to Next.js 14. I am confused what should I do? Should I start it because I don’t have time(9to5 job + family)?