That's a good point, I'm not exactly sure what the best practice is for using NSE vs. SE functions within functions. My practice is to just use the NSE version

That's a good point, I'm not exactly sure what the best practice is for using NSE vs. SE functions within functions. My practice is to just use the NSE version unless I have a good reason not to. Generally my goal with teaching beginners to use R is to just not be afraid of functions as the barrier tends to be feeling like they can use them at all rather than using them in the safest way.