If it brings a smile to a child, is it wrong? If it makes the child happy, is it wrong? If it brings one less thing for a parent to worry about, is it wrong? You are bringing simcha to someone’s life!! You are doing a Mitzvah!!! It’s all in your perspective and how you look at things. . And actually good well- made shoes ARE a necessity in life.
I once read (from a reputable, Torah-observant foot doctor in Israel) that there are 26 bones in the foot. 26 is gematria of HaShem – therefore there’s another good reason for shoes. We have to protect our foundation, which is not only physically our feet- but also the 26 bones which are representing HaShem who carries us everywhere we go.
The choice is yours, if you want to GLADLY help someone else out and be Hashem’s messenger, or not. Without judging them and without calling it a “trump lifestyle”