You must not perform tagfiddling like this without following https://wiki.openstreetmap.org/wiki/Automated_Edits_code_of_conduct .
leisure=indoor_play is a widely used documented tag https://taginfo.openstreetmap.org/tags/leisure=indoor_play#overview and is widely supported by external projects https://taginfo.openstreetmap.org/tags/leisure=indoor_play#projects .  I'll revert this change.
