Sure they are.
Either Jesus is God or Jesus isn't. I'm with the "is" crowd. You can't be in both is and isn't and if you aren't in the "is" crowd then your sins are yours, since only God, not any man, can forgive sin. The Pharisees understood that, which is one reason they were so put out with Jesus. Jesus could forgive sin
"And the scribes and the Pharisees began to reason, saying, Who is this which speaketh blasphemies? Who can forgive sins, but God alone?" Luke 5:21
precisely because he is a part of the "we/our/us" of the trinity, declared in
And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth. Genesis 1:26
That's the root of the thing. The rest is a discussion on the nature and attributes of the trinity, including subordination in relation to tasks, as in the Holy Spirit being sent to man in the name of Jesus as Jesus is sent in the name of the Father.
No one is arguing against the existence of God the Father, or God the Holy Spirit, for that matter. That is, no one who accepts the trinity is arguing against the nature of that trinity. But those who would treat the Father as God and Jesus as something less have a problem.
I didn't say you had to understand the trinity. I said you had to understand that Jesus Christ is God and that as God he can forgive your sin.