They don't like talon. He's an assassin with a silence. There's very little counterplay to that. For more information, see Leblanc.
However, whether they like a champ or not doesn't really affect the number of skins they get (see: urgot - bad champ, many skins, and Kha: good champ, no skins). That's based on a LOT of things, including, but not limited to:
- How easy their model makes it, to make new skins
- How much they need a VU - if a champ needs a VU, they're not going to make many skins until afrer the rework
- Harder-to-quantify factors, like Popular demand, and How cool the skin will be