"One man esteems one day above another: another esteems every day alike.... 'Let' every man be fully persuaded in his own mind'.... He that regards the day, regards it unto the Lord; and he that regards not the day, to the Lord he does not regard it."...Rom.14:5-6.... It is clear..The Old Law was taken out of the way when Jesus died on the cross. Now we walk the walk of Faith.
The scriptures describe the above events clearly. Yeshua came to fulfill the Almighty's plan as laid out in the Torah. Yeshua kept the law and fulfilled that which he was commanded to do. Unlike us, Yeshua did not allow himself to be taken in by the one cast down to earth. We have inherited lies. Through our actions, we stupidity observe days set aside for false idols and gods. How smart is that?!
It is one thing to do so through ignorance, it's quite another to do so knowing better. All sin is forgiven, with few exceptions, due to the sacrifice Yeshua made for us. Those who accept and follow Yeshua will receive the gift of life everlasting, and sooner than the rest, who will queue for the final judgment.
Much of the mystery of the Almighty remains such. We are told it will eventually be revealed. This mystery is much more complex than we understand, or probably even need to know for now. The timing of Biblical events, that have already occurred, are of such miraculous coincidence that only a supernatural power could have accomplished such. Unfortunately, the darkness of this world has managed to obscure these miracles by co-opting observances the Almighty instructed us to always observe. We now observe events based on some of the most hideous practices imaginable. For example, the practice of coloring eggs at easter, harkens back to when eggs were originally dyed with the blood of sacrificed infants (Btw, aren't we sacrificing infants to the god of convenience today?!). Is this something you care to reenact, now that you know the real meaning behind it - not me.
So you see, there are reasons we were instructed to do some things and not others (to keep the commandments). The others eventually lead to undesirable consequences. So it is important that we follow the Almighty's commandments, but not necessarily the laws of the Pharisees, Mullahs, Buddahs, Reverands, Rabbis, or etc.
This is what Paul taught and tried to explain, and what the Messiah taught his disciples to teach. We, in our limited capacity to comprehend, and also at times under the influence of the master liar who rules this world, haven't gotten it quite right yet. Those searching for the truth and exposing more of the lies, and outright deceit we've inherited, are doing the Almighty's work.
Instead of condemning them, we should try to evaluate and understand what they've found.