An amazing guitarist knows the power of their tool. They can have the most spectacular guitar of all time but without choosing the correct guitar strings to go on it then they are sabotaging their playing. They need what is right for them.
There are many differences in strings too and many factors impact the sounds that are produced by them. There are different gauges and a variety of different thicknesses. It is also essential to understand the different materials used and there are always different brands available too.
A musician will always find their own preferences through experimentation though. They will come to learn about the use of standard nickel for electric guitars or the copper bronze for a warmer tone on the acoustic guitar. You can even find different coloured strings to match the appearance of the guitar. The possibilities are endless so it is up to the guitarist to explore the options and find what works best for them.