Dependable to the person.
It's either
- Some kid who used some random person's credit card that they could find and just bought stuff, which afterwards they AFK for 2000 hours to act "Veteran"\
OR
- A guy who actually wants to support the game since they love the game, and then pay for items to show how much they are dedicated to it as to what hey ya said.
If that's so, it's the latter that says
"Yeah, these effects that I bought tells me I love the game." or however really overly-exaggerated the player would say.
But if it's generally speaking,
Not at all, they don't. Just pixels.