Christians can meet all they want but for what? What's the reason for meeting?
Jesus's coming is not something that one can say here or there He is or it is in the future or it was in the past. He is and was and is to come the Almighty - meaning that Jesus has always been coming since the 1st century and will continue until the end of age. Likewise, resurrection of end times saints is not something that one can say it will be in the future or it has already happened because it is a continuous thing that happens daily since the 1st century.
That does not sound at all like Biblical Christianity to me. Do you reject the passages about waiting for the coming of our Lord Jesus Christ.
Paul also warned about men who taught that the resurrection had come already (bold emphasis mine)
II Timothy 2
15 Be diligent to present yourself approved to God, a worker who does not need to be ashamed, rightly dividing the word of truth. 16 But shun profane
and idle babblings, for they will increase to more ungodliness. 17 And their message will spread like cancer. Hymenaeus and Philetus are of this sort, 18
who have strayed concerning the truth, saying that the resurrection is already past; and they overthrow the faith of some. 19 Nevertheless the solid foundation of God stands, having this seal: “The Lord knows those who are His,” and,
“Let everyone who names the name of Christ depart from iniquity.”
20 But in a great house there are not only
vessels of gold and silver, but also of wood and clay, some for honor and
some for dishonor. 21 Therefore if anyone cleanses himself from the latter, he will be a vessel for honor, sanctified and useful for the Master, prepared for every good work.
I read an interesting exegesis of this article that said that Paul was likely referring to Korah's rebellion, where the ground opened up, and the people were told to depart from these wicked men. The author said the Greek here, translated 'iniquity' could refer to the set of persons or things characterized by iniquity.
It would seem Paul is comparing these men who taught that the resurrection had already occured to vessels of dishonor, also, from whom the one who would be a vessel of honor must cleanse himself.