You may want to ask the creator of the post, they brought up the oneness position, I guess trinitarians may be threeness. I do know the oneness people believe Jesus is the visible image of the Father.
The creator of this post follows a man and his skewed views of the Bible, a man that is lifted up with pride above his brethren, and condemns them to hell for disagreeing with him. Trust me, I used to be a follower of the man myself before I found out that I should read the Bible and think for myself with the direction of the Holy Spirit.
As for the oneness vs trinitarian issue the OP brought up, they use a strawman argument and say that people that believe that the triune God is one God, unified in person and spirit, are modalists. They don't understand modalism, or why it's heresy; and as a result of departing from what the Bible teaches, they end up teaching that God has three minds, three wills, three centers of consciousness, which turns out to be a teaching of three separate gods. It's a totally false premise based upon tradition rather than the Bible.
The Bible clearly teaches a distinction within the Godhead, but the Bible also teaches that the Godhead is three in one. You can't talk about the distinction of God without talking about the unity of God.
And Jesus is the visible image of the Father. Colossians 1:13-15 "who hath delivered us from the power of darkness, and hath translated
us into the kingdom of his dear Son: in whom we have redemption through his blood,
even the forgiveness of sins:
who is the image of the invisible God, the firstborn of every creature:"
Not only is Christ the express, visible image of the Father, but Jesus is one with the Father and equal to him.
John 14:8-9 "Philip saith unto him, Lord, shew us the Father, and it sufficeth us. Jesus saith unto him,
Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou
then, Shew us the Father?"
John 10:29-30 "My Father, which gave
them me, is greater than all; and no
man is able to pluck
them out of my Father’s hand.
I and my Father are one."
Isaiah 9:6 says that Jesus is the everlasting Father. Isaiah 9:6 "For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace." Oftentimes they will argue and say, 'Well he's only called the everlasting Father, but he's not really the everlasting Father even though this verse says it.' That logic fails, because in the previous breath, it calls him the mighty God. Are they willing to say that Jesus is only called the mighty God, but that he really isn't the mighty God?
If you believe the Bible, you cannot cherry pick what you want and what you don't want from it.