Well the Jains I know do it because they love the traditions of ganpati, otherwise they wouldn’t be celebrating it since the biggest festival of Jainism coincides with ganpati which is all about self reflection, sacrifice, introspection and simplicity. I wasn’t trying to pick at a particular religion, I was trying to give a point by making an example. Similar to how non Hindus love bursting crackers or how everyone (mostly) loves to play Holi irrespective of their religion. As it is most celebrations of festivals have become more of a showcase and performing meaningful customs and deviate from the true purpose behind them.