well, you don't have to agree with it, and I'm not in the interest in arguing or convincing anyone of anything, but I'd happily explain my rationale....

What Ramb says exactly is...
'Time flies... Seems like just yesterday you and that girl had everyone here lined up.
Queen on her side, King on your side, Tenna in back... Oh, it was chaos, CHAOS!
Heh, only kids like you two would take a laptop home just to play make believe.
... how is she, Kris? Are you two...? Well, it's alright.'

The description to me describes roleplaying with these objects, each kid playing on different sides, so you have the girl playing Queen + her entourage, and the other playing King + his entourage. I don't think the Look of Queen, her mansion, her servants, etc, would need to be recognized at all... but simply the names, dynamic, personality, general setting,, vibe of dialogue would HAVE to be familiar! Even if I and my playmate had different visual conceptualizations of our playtimes, I'd still remember the jist, yaknow? For what its worth anyway Asriel's computer even has a drawing (by him and Kris) of a cyber-world, so... I think the kids did occasionally illustrate their visions together (and are now conveying them in a crazy darkride)...

When Noelle describes the world she can only describe it as feeling like a video game... and she remarks repeatedly on it resembling what Dess described to her of cities she longed to go to, what Dess liked, wishes Dess was here to see it...

I don't see the Cyberworld as very reflective of Noelle's interests or even what Kris might have liked to play with her when they were kids! Which to be true IS a big mystery to us, beyond Kris obviously liking to haunt her with spooky themes and SOUL and BLOOD. And BECAUSE Noelle is important, I think we're saving a darkworld reflective of THOSE playtimes for later! I think there will be lots to chew on with that... and there is evidence in the gamefiles that Noelle will rejoin our party, at some point. I think when a world is wholly reflective of Noelle-Kris playtimes, we will be hit by the greatest truck of context and knowledge imaginable. Personally I'd really like to explore more of a horror/slasher/3AM Not Clickbait darkworld theme with Noelle ?!?! or fuck, even something humiliatingly romantic ? I dunno!! CyberCity doesn't mesh with Noelle's color/visual/references for meeeee as some sort of Bespoke Place... after hearing Raise your Bat (and associated outfits) and the inside of Dess's room, I feel more convinced the CyberCity could draw from her/Kris's connection, what hobbies THEY could have shared, rhythm games and nonsense................

Dess liked music, cities, cool bands, stuff like paintball... its so easy to imagine arcade games, punchout, fitting in there... the cybercity really fits way more with a kind of maybe-mean-older-tween-girl vibe to meeee. Calling you a child, praising herself as super intelligent and amazing. Even with stuff like some of the citizens being thirsty horndogs for Queen ugghrhgh. When I look at dialogue between King & Queen specifically even I cannot fathom Noelle in that role with Kris................

also I'd say "remember when you used to..." is the theme of the entire game! It couldn't be tied to any 1 character, as our message about nostalgia or memories is something which will surely penetrate every member of the cast, and our finale, which will involve everyone. Tenna reminisces on absolutely everyone in all directions, Kris reminisces on Azzy (Talked about the snow matted on your brother's nose./** Talked about the chill of the wind on the ice skating pond.*), Susie goes through her unhappy memories, Noelle reminisces on Dess, Toriel reminisces on Asriel, Asgore reminisces on their family.... everyone is "remember when Azzy did this/remember when you did this/remember when Dess used to"........ a lot of "want it to be the way it was again", which was also something UNDERTALE explored (specifically about loss). Obviously the broad concept of 'memories'/'nostalgia' applies to everyone....... !