I don't believe anyone is suggesting it is commanded to keep feasts. What is being suggested is that the feasts of Israel are a wonderful and optional visual representation of the gospel. If you don't want to take notice of the feasts, you don't have to.
But those who do and are blessed therein, good for them
well..sure, people can keep follow them if they want, I never said they can't, but i see it as another distraction from the new way of the Spirit, Hebrews says strengthened by
grace,
not the temple rituals, which would also mean the feasts.
Heb 13:9
Do not be led away by diverse and strange teachings, for it is good for the heart to be
strengthened by grace, not by foods, which have
not benefited those devoted to them 13:10 We have an altar from which
those who serve the tent have no right to eat.
we have something better, a key word in hebrews, yet people push feasts, to me it is a distraction addition, right out of the list of add-ons from Col 2, to which Paul said have no spiritual value for us in 2:23. We are told we will benefit from the feasts, gain spirituality, etc, but they did not even benefit (13:9), so why would we now benefit, who have something better?
When grace is not present, law and rituals will always come to fill the void.
Notice how 13:9 says not to be deceived or
led away by these things, same as Col 2:4, and 2:8. Judaistic rituals are not for the church.