In my opinion, it's better to be a specialist rather than a generalist. Learning multiple skills is good but you can never be better than those who focus on one skill and work on it over time. In the end, people who learn multiple skills are just jacks of all trades and masters of none, the only benefit is that you can work in many fields and that will increase your chances of securing a job because if you can't get a job in one field, you can try other fields