HK’BH doesn’t ask who is mizrachi in this minyan and who is Chareidi. If you like the minyan, davening is davening. I think the question of who was right depends upon when they scolded you. If they expressed annoyance that your loud tefillah was disturbing their mundane conversation, then it’s time they take their conversation outside. Shul is for davening, not talking. If, however, they, who generally talk loud, were complaining to you about how your loud tefillos disturb them during their actual davening, that’s another story. Then, I believe, they have a right to ask you to soften the volume of your voice. Loud tefillah that enhances kavanah might be customary in certain environments (yeshivos) but not in others.