I can certainly support this, as it is Catholic, but for us there is no separation between a personal expression of faith in Christ and obedience to the Church He founded. The reason it cannot be separated from doctrine is because it relates to the identity of Christ, which is a matter of doctrine. There is also the matter of how “faith” is defined. Is it just a profession once for all? Is it faith that works? These are doctrinal issues as well. What does it mean to “surrender”? This is all part of the teaching of the faith - what it means to be a disciple.
Acts 2 "Now when they heard this they were cut to the heart, and said to Peter and the rest of the apostles, “Brethren, what shall we do?” 38 And Peter said to them**, “Repent, and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins;** and you shall receive the gift of the Holy Spirit. "
They were baptized, which involves a profession of faith and then:
“41 So those who received his word were baptized, and there were added that day about three thousand souls. 42 And they devoted themselves to the apostles’ teaching and fellowship, to the breaking of bread and the prayers.”
Profession of faith > Baptism > devotion to the teaching of the Apostles.