Incorrect. You’re trying to create a false binary here, that you can pay for convenience/progress/save time, OR you can learn how to play the game better, but not both. This is simply not the case. There’s nothing magical about plex or skill injectors that removes the ability to learn by experience. And there’s nothing magical about having skill queues that take months and years of sub time to complete that teaches you how to play better.
A player can buy Plex, convert it to ISK, and use that ISK to buy 50 frigates and learn how to PvP. Without needing to waste time on PvE ISK grind. And conversely, another player can pay nothing, grind PvE mining for months for ISK, and learn nothing about the overall game. Or simply buy 3 months of sub, set up his training queue, then log off and go play a more interesting game while he waits for his skill queue to complete. Possibly never to return.
Gaining gameplay experience/skills is a completely separate issue from paying for convenience/progress/time savings.
Selling you illusions is literally the business of online games.