That's debatable Jack. TMP is seen by many to be a soft reboot. Yes they talk of the history a little, but in terms of sheer creative direction TMP is whole-cloth different from TOS. To my knowledge, not one bit of TMP has any real ties to TOS outside of the director's cut remaster where they put in a TOS shuttle in one scene.
TNG is also, in certain respects, a soft reboot. Yes it has some teriary ties and it has a cameo or two early on that makes it obvious they exist in the same universe... But you could honestly cut those out and TNG would basically be "Star Trek 2.0".
You may not see it, but a table of writers who basically has to pour over the fictional, sometimes contradictory history, of 50 years of television and films to ensure their stories fit in, might disagree with you, and I won't be surprise if they "shuffle the deck" at the very least. If not start whole-cloth from scratch.