These verses would suggest otherwise.
Acts 13:14 But when they departed from Perga, they came to Antioch in Pisidia, and went into the synagogue on the sabbath day, and sat down.
Acts 13:27 For they that dwell at Jerusalem, and their rulers, because they knew him not, nor yet the voices of the prophets which are read every sabbath day, they have fulfilled them in condemning him.
Acts 13:42 And when the Jews were gone out of the synagogue, the Gentiles besought that these words might be preached to them the next sabbath.
Acts 13:44 And the next sabbath day came almost the whole city together to hear the word of God.
Acts 15:21 For Moses of old time hath in every city them that preach him, being read in the synagogues every sabbath day.
Acts 16:13 And on the sabbath we went out of the city by a river side, where prayer was wont to be made; and we sat down, and spake unto the women which resorted thither.
Acts 17:2 And Paul, as his manner was, went in unto them, and three sabbath days reasoned with them out of the scriptures,
Acts 18:4 And he reasoned in the synagogue every sabbath, and persuaded the Jews and the Greeks.
Oh, right. That's why every christian instinctively knows the ten commandments without them being taught to them. They're written on the mind and heart! How stupid I am.
You are continuing to ignore the fact that Acts 21:25 is once again speaking about circumcision. It's directly in the preceding verses. But we won't reason that in, frivolous details.
So in essence, you've made yourself into god. Something isn't wrong, unless you think it is, or feel guilty about it.
God expresses what is right and wrong inside scripture. Your own conscience being the only judge of what's right is very convenient - and entirely unbiblical. The Messiah spoke about people who paid lip service to obeying God, yet refused to do so. Perhaps God hadn't convicted them about obeying Him yet.
Matthew 15:8 This people draweth nigh unto me with their mouth, and honoureth me with their lips; but their heart is far from me.