Full XY evolution set

I bought a full XY evolution set (about 5/6 years ago...). They appear to be correctly textured but to me they've always felt more thin/flimsy than other Pokémon cards I have (were XY cards more flimsy???). I have always been a bit suspicious about it and I guess it's time to bite the bullet and not live in ignorance, so what do you think? If other photos would help let me know, I didn't want to overdo it 😅