Not remotely true, not all “christian” churches believe in transubstantiation. In fact many don’t.. Presbyterian and other “reformed” churches flatly and openly not only deny transubstantiation but consider it rediculous, and believe that communion is nothing more than a commemorence of Christs death.
Of course though they don’t believe in it, they do require someone who has been ordained, and not a pastor in training to do the blessing over the bread and wine.. which to me makes no sense. If its nothing more than a rememberance, what does it matter the rank within the church of the person who performs the blessing?
I’ve had the “privilege” of watching the left over “blessed” bread being tossed back and forth by children trying to catch it in their mouths across a large room after service in a presbyterian service in a game.
Don’t kid yourself for one minute that ALL churches that claim to be Christian remotely believe in transubstantiation or an equivlant.
The Reformed tradition is less than 500 years old, and so per rogator's post at 20, would not be expected to believe in transubstantiation.