You're going to run into many situations where there is a disagreement about a technical decision throughout your career. Take this as an opportunity to practic

You're going to run into many situations where there is a disagreement about a technical decision throughout your career. Take this as an opportunity to practice selling your ideas. Provide concrete examples and time savings, show that it's industry standard, etc. If it doesn't work, it's also good practice for accepting that sometimes things won't go the way you think is best.