Let me see if I can better articulate what it is I’m trying to say. From my experience as a spiritual seeker I have come to know that we are not all at the same place on our spiritual path. Just as vital to understanding this is understanding that God is in charge. We don’t know God’s plan for ourselves most of the time let alone what God has planned for others. Perhaps God has a reason for wanting people where they are. Perhaps their presence in that place will make a difference - ripples on a pond - you know? I’ve had some experiences that were something of a let down in what I expected to achieve - finally I realized that I had to take on faith that my time wasn’t wasted, that I can only see a tiny bit of the picture. God has the wide angle view, not me. I don’t know how my presence/actions play out down the pike. I don’t know what my influence might start/stop. Spirituality is a deeply personal thing, a large part of our self-identity. Generally, folks don’t decide what faith/doctrine/creed to follow lightly. Instead it is given much thought and prayerful consideration. God might need someone to be other than Catholic because it fits into his “big picture”. Let’s give folks, and God, the benefit of the doubt here. Perhaps those folks will learn a vital truth through someone they meet as a result of that turn on their spiritual path.
Last but not least, because spirituality is such a big part of who we are, insulting/belittling or otherwise making light of one another’s paths can be very damaging, both emotionally and spiritually. It can literally turn people off to God altogether. (please note that I am talking about folks whose spirituality is positive, I’m not speaking of folks who follow some creed that includes hatred, racism, etc. - these people do not respect the dignity of others so I pretty much just ignore them).
This is just my take on it and, as I said, I’ve been a seeker all my life (still am).