I am not going to debate your theology, only your hermeneutics, because you are asserting things with respect to Catholicism not supported by facts. Personally I find Baptism by immersion commendable.
Although Baptism (βαπτίζω) can mean immersion, it does not exclusively do so. It idiomatically also meant to ritualistically clean or even to dye. There are two versus in Scripture where it clearly did not mean to immerse. The first:
"Now when He had spoken, a Pharisee *asked Him to have lunch with him; and He went in, and reclined at the table. When the Pharisee saw it, he was surprised that He had not first ceremonially washed before the meal. But the Lord said to him, Now you Pharisees clean the outside of the cup and of the platter; but inside of you, you are full of robbery and wickedness." - Luke 11:37-39
The word used for wash was (ἐβαπτίσθη, aorist passive of βαπτίζωliterally, "be baptized") before eating.
"The Pharisees and some of the scribes gathered around Him when they had come from Jerusalem, and had seen that some of His disciples were eating their bread with impure hands, that is, unwashed.(For the Pharisees and all the Jews do not eat unless they carefully wash their hands, thus observing the traditions of the elders; and when they come from the market place, they do not eat unless they cleanse themselves; and there are many other things which they have received in order to observe, such as the washing of cups and pitchers and copper pots.)- Mark 7:1-4
Here too the word wash was literally, "baptize themselves" (βαπτίσωνται, passive or middle voice of βαπτίζω). We see additional evidence of the intended meaning to wash away sin when the word used was apolouo (ἀπολούω) in Acts 22:16.
Peace be to you.
I believe there is more than enough room for debate here...
Since the idea is to clean, it stands to reason that water is the medium...It also stands to reason that the hands had to be immersed or covered with water to achieve a sufficient cleaning...
Sprinkling 3 drops of water onto dirty hands will never do the trick...