You probably shouldn’t call people childish for engaging with you on your own shift in discussion to a financial-level if you plan to later call foul on people calling that out.
If you want an actual discussion, denigrating those you seek to converse with is just not the way to go about it. Don’t pretend to be above pettiness after blatant name-calling, then pointing the finger at the person you called names as the bad actor. It’s a bad look.
You shouldn’t need me to tell you this.