@The Last Shaymin Make sure you read this as well; I'm answering JakeTheGearHeart
but I noticed you liked the posts being referenced... and even if I didn't disagree with most of what was said, they're still built upon a misunderstanding.
When folks refer to a solitaire deck in the Pokémon TCG, they are talking about one where you render your opponent's actions all but meaningless, and in short order. It can be a bit confusing because of things like counters or dueling solitaire decks (as oxymoronic as that sounds). It is quite possible that a particular Reshizard build has ascended to "solitaire" status. A deck isn't referred to as "solitaire" because of its win condition, but because of the method by which it achieves that win condition. It is about winning without your opponent having a real chance of fighting back; barring extreme luck or misplays, it has become a one-player experience even if it is technically still a 2-Player game.
Creativity is subjective, or at the very least, very difficult to analyze. A lot like skill, actually. Who is being more creative or skilled: the player with a deck that runs half-a-dozen counters to deal with the metagame, or the deck that has to use the same tight list to deal with whatever it faces? Is it more creative/skilled running different cards, or finding ways to use the same cards to handle different situations?
I've been playing for about 20 years; control decks are in no way "creative" to me because they have a long history in the TCG. Out of the major strategies, the one I've seen least is mill. Mill typically involves at least some control elements, and it isn't uncommon for stall/control decks to include some mill. What I am talking about, though, are decks where milling is the main focus and happens most turns. Which isn't to say that is the most creative; rather, as I haven't encountered competitive mill decks too often, the approach remains
novel.
It really sounds like you're just sick of Reshizard decks - and I doubt you're alone - but you're trying to make that into something it isn't. I'll hold off discussing JakeTheGearHeart's second comment, as it was built upon a blatant misunderstanding of what is meant by "solitaire deck".
Note: Sadly I had to edit things quite a bit. I made the mistake of posting when I knew I was in a rush, so some sentences were extraneous, poorly worded, and/or poorly positioned within the paragraph.