Doodle- I’m not saying any thing its Reb Chaim shlit”a who says it and yes he says it about all modern Israeli names.
Frummy- Reb Chaim shlit”a does not differentiate between before you name or after he says clearly to change after.
Derech- The sefer is all about naming. As for whom the mechaber is, the sefer is not in front of me rite now. Ill bl”n try to get back to you on that.