Made up? Please be more specific. Martin Luther was God's judgment on the Church, in my view, and when the Church got off track and slipped into invention and legalism, God simply went around them - through the wit and wisdom he imparted to a German monk.
If this were so, then he would have succeeded in establishing only one church. Several years after he had started the reformation, Luther surveyed the damage that Sola Scriptura, and its accompanying individual interpretation of Holy Scripture, had done to his movement. Shards had splintered off from his Lutheran church, with Munzer going this way, Calvin going that way, Zwingli going another way, and with all scattering the flocks.
"He who is not with me is against me, and he who does not gather with me scatters." Matthew 12:30, Luke 11:23
Immediately the errors of Protestantism emerged, for who did the scattering? The damage of individual interpretation of Holy Scripture had taken its toll immediately. Luther sounded as if he lamented what he had started when he made the following remarks,
"This one will not hear of Baptism, and that one denies the sacrament, another puts a world between this and the last day: some teach that Christ is not God, some say this, some say that: there are as many sects and creeds as there are heads. No yokel is so rude but when he has dreams and fancies, he thinks himself inspired by the Holy Ghost and must be a prophet."
De Wette III, 61. quoted in O'Hare, THE FACTS ABOUT LUTHER, 208.
Luther admitted that the Catholic Church was the true Church.
"Accordingly, we concede to the papacy that they sit in the true Church, possessing the office instituted by Christ and inherited from the apostles, to teach, baptize, administer the sacrament, absolve, ordain, etc., just as the Jews sat in their synagogues or assemblies and were the regularly established priesthood and authority of the Church. We admit all this and do not attack the office, although they are not willing to admit as much for us; yea, we confess that we have received these things from them, even as Christ by birth descended from the Jews and the apostles obtained the Scriptures from them."
Sermon for the Sunday after Christ’s Ascension; John 15:26-16:4 (2nd sermon), page 265, paragraph 28, 1522.
I acknowledge the Catholic Church as having its origins in the ancient apostolic faith, so what?
The Church clearly made up things, whole cloth, invented by men, and there's no getting around that for me (and for millions of other Protestants). All the Marian doctrines, Purgatory (a money making scheme and nothing more, in my opinion), indulgences, relics, confession to priests, purges, inquisitions, persecution of anyone who translated scripture, refusing to offer the wine and only the host to those taking communion, etc. The list of errors, major and minor, and all manner of offenses committed by the church in Luther's day was nearly endless. They were power mad and had become nothing more than legalistic Pharisees. Luther was acting by God's Will, I have no doubt of that.
I adhere to the tradition inherited through Scripture. I adhere to the Creeds (Apostle's, Nicene, and Athanasian), and I even acknowledge that for some time the church, as it came to be in Rome, had its origins with the apostles...
But the Church fell into two errors: invention and legalism. I believe the Reformation was God's judgment on the Church for its errors, and His way of going around the institution. Further, I do not believe that the "church" is an institution, but is the community, the priesthood, of all who believe and acknowledge Jesus Christ as Lord.
Jesus didn't come to establish an institution called the Church of Rome. That is not what "ekklesia" means, nor what the kingdom of God means, and Catholics have used that one poorly translated verse from Matthew ever since (and assuming it meant the actual institution called the Catholic Church of Rome).
Sorry, I acknowledge the historical legacy the Church of Rome gave to us, but I refuse to acknowledge the (certainly to me) obviously man made traditions that they piled on to the tradition handed down in Scripture. Since I am not free to choose the Catholic Church, without accepting that baggage, I remain Protestant, without accepting that baggage. Believe what you believe to be true, and I will believe what I know to be true.