Wow, I didn't know that, and I never even considered the possibility of using regular expressions in the map! Very interesting, thank you!

It's true that using streams makes handling large volumes of data easier; however, I had problems some time ago with an API response because, to read JSON objects within a stream, I needed to transform them using %FromJSON, but due to the volume of data, this caused a StringStack error. Therefore, I had to read the stream line by line and extract the data using pieces and extracts.

Many years ago I used Xecute in some very specific situations that, I confess, I don't even remember very well anymore; however, I remember very well that debugging legacy code is always made more difficult with the use of Xecute, so I have always been an advocate against using it, except in situations of extreme necessity. 
But I recognize that in your example it really seemed quite useful.