Moving the goal posts. The point is that technology advances, it's not a static thing. We have a precedent in canon 100 years in the past, and in relatively contemporary times on TAS showing a beach landscape. Think of how much our own tech has advanced in 100 years. Heck even in the past 10 years. It's important to remember that TOS' Enterprise is an older ship than Discovery by a decade. It's not meant to be (to quote Admiral Cornwell) "the most technologically advanced ship in the fleet." Discovery is.
Tucker had never seen anything like a holodeck until the Xyrillians showed it to him. Holographic interfaces were also common place on the USS Shenzhou and aboard the Klingon ships, but not anywhere in the original series or the movies.
LAFORGE: I think you're going to enjoy the twenty fourth century, Mister Scott. We've made some pretty incredible advances these last eighty years.
SCOTT: From what I've seen, you've got a fine ship, Mister La Forge. A real beauty here. I must admit to being a bit overwhelmed.
LAFORGE:
Wait until you see the holodeck.
...
JANEWAY: It was a very different time, Mister Kim. Captain Sulu, Captain Kirk, Dr. McCoy. They all belonged to a different breed of Starfleet officer. Imagine the era they lived in. The Alpha Quadrant still largely unexplored. Humanity on verge of war with Klingons. Romulans hiding behind every nebula. Even the technology we take for granted was still in its early stages. No plasma weapons, no multiphasic shields. Their ships were half as fast.
KIM: No replicators,
no holodecks. You know, ever since I took Starfleet history at the academy, I always wondered what it would be like to live in those days.
Most sites classify the animated series as "questionable canon". In otherwords, the rec room is a non-fact. Using a non-fact to prove the existence of a fact makes no sense.