It reminds me a little of Wizardry vs. Ultima. They were the first two huge RPG franchises, but Wizardry has mostly vanished from the collective consciousness and Ultima had far more staying power.
The thing PCS did is just one step in a lineage of pinball simulation software, starting with the Atari "Video Pinball" games and progressing through to today's games from Zen(Pinball FX) and Farsight(Pinball Arcade), as well as open source solutions like Visual Pinball. The construction feature was really novel and I used it too as a kid, but it doesn't really exist as a "game design" - it's software first, kind of like flight simulators. Early flight sims aren't very well remembered, although they can have a retro aesthetic appeal. [0]
Lode Runner, on the other hand, is still Lode Runner in all its forms. It isn't a simulation of anything - the game pieces have a concrete, Chess-like logic to them. It's hard to improve upon just by adding "stuff" as the 1994 version did. And the game is easy enough to clone that many people, myself included, played people's clones of it.
Are you kidding me? Everyone who was into computers back in the 80s remembers the chunky look of MFS/Sublogic Flight Simulator 1.0 through 4.0. When Chuck Yeager died, more than one Hackernews remarked of how they discovered him through Chuck Yeager's Advanced Flight Trainer back in the day.
If you think it's only the kids' memories that matter, you must work for Google.
As for whether "the kids" are rediscovering them, they don't appear in classic game compilations (which, again, skew console-y), but retrocomputing YouTubers like the 8-Bit Guy and LGR rekindle interest in these titles. Inasmuch as young people are interested in classic computers, they will come across these old flight sims.
The people who'd worked on the original Dragon Quest saw Wizardry and were inspired to create a pared down RPG for two buttons and a d-pad consoles