I think it depends of the language, for example, in many cases, pronunciation it's important because it can change the meaning or intention for the message, in spanish you can say "Yo visito a mi mamá", that means I visit my mom (in present), and the other example could be "El visitó a su mamá", that means he visited his mom (in past), in writting we can observe the accent and it's easy, but in speaking changes "Visito" and "Visitó", the last 'o' you have to emphasize in pronunciation to be understood. I hope it helps you to understand a little more with my point of view :)

I think it depends of the language, for example, in many cases, pronunciation it's important because it can change the meaning or intention for the message, in spanish you can say "Yo visito a mi mamá", that means I visit my mom (in present), and the other example could be "El visitó a su mamá", that means he visited his mom (in past), in writting we can observe the accent and it's easy, but in speaking changes "Visito" and "Visitó", the last 'o' you have to emphasize in pronunciation to be understood. I hope it helps you to understand a little more with my point of view :)