No, it isn’t. While a Lutheran may not refer to marriage, unction, confirmation or ordination as a sacrament, these are still important practices within the tradition.
Lutheranism has a narrower definition, but not a narrower practice.
Sorry, my point is, “Gospel is shared and sacraments…” The Gospel is shared with all Christians, but everyone has a different belief on which sacraments are needed, which are just symbols, and which are not needed at all…
Side note- most if not all these discussions don’t take the big picture to heart. Its very easy to sit and discuss, baptism, apostelistic succession, papacy, etc…
The real question(at least in my opinion), is;
Did Jesus, knowing he was leaving to the father, leave an authoritative, visible authority church behind to run the show.
Catholic - yes, St. Peter
Orthodox - yes, all the apostles
Protestant - yes, all christians
Again, I could be wrong, but once you answer this, then a lot of the other discussions go away…