You may not like it, but when referring to infant baptism as Roman, you are doing more than just give it a name. It's not an arbitrary name that one can simply use without any implications. It is a choice which is patently unfair though it may certainly be ignorance of the facts that leads one do this rather than malice. However, to complete the original thought: to tar all infant baptism as "Roman" is to do many things, not least of which is to characterize the proper practice of infant baptism with the gross errors of Tridentine Romanism. The infant baptism of the early church cannot be so identified, nor can the infant baptism which faithful Presbyterians and Reformed practice.