Addressing the OP only, while not reading all the post, and not saying that any is right or wrong, consider this. "This Generation", is not identifying a time period of People, but a type of People. lets give some example to see this. Matthew 3:7 "But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come?". here, this is a type of Generation. all the people/Generation from Adam to presrnt day when this was spoken. let's see what type or kind of Generation is THIS. Matthew 12:34 "O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh". so the generation being spoken of was an "EVIL" generation. so THIS generation was a "EVIL" generation, who Father is of the Devil.
Matthew 12:45 "Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation".
one more, and we can clearly see "THIS" generation. Matthew 24:29 "Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
Matthew 24:30 "And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
Matthew 24:31 "And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
Matthew 24:32 "Now learn a parable of the fig tree; When his branch is yet tender, and putteth forth leaves, ye know that summer is nigh:
Matthew 24:33 "So likewise ye, when ye shall see all these things, know that it is near, even at the doors.
Matthew 24:34 "Verily I say unto you, This generation shall not pass, till all these things be fulfilled.
so have the Lord Jesus came back in the clouds and eaped the earth? , so far, not yet. so "THIS GENERATION" is a line, or lineage of a type of People, either "GOOD" or EVIL". so The parable of the tares/THIS EVIL GENERATION prove this out. listen. Matthew 13:24 "Another parable put he forth unto them, saying, The kingdom of heaven is likened unto a man which sowed good seed in his field:
Matthew 13:25 "But while men slept, his enemy came and sowed tares among the wheat, and went his way.
Matthew 13:26 "But when the blade was sprung up, and brought forth fruit, then appeared the tares also.
Matthew 13:27 "So the servants of the householder came and said unto him, Sir, didst not thou sow good seed in thy field? from whence then hath it tares?
Matthew 13:28 "He said unto them, An enemy hath done this. The servants said unto him, Wilt thou then that we go and gather them up?
Matthew 13:29 "But he said, Nay; lest while ye gather up the tares, ye root up also the wheat with them. (THIS IS WHY "THIS GENERATION, THIS EVIL/TARES GENERATION" WILL NOT PASS AWAY, TILL ...... ALL THESE THINGS BE FULFILED).
Matthew 13:30 "Let both grow together until the harvest: and in the time of harvest I will say to the reapers, Gather ye together first the tares, and bind them in bundles to burn them: but gather the wheat into my barn".
so to me, this generation is identifying a type of people, instead of a particular people in time.
PICJAG.