I see three basic cases:
If you vote to close, then flag for mod attention and say "this is off-topic", I'd consider that abuse.
If you vote to close, then flag it as low quality (for example) and it's not, I'd consider that abuse.
If you vote to close, then flag it as low quality (for example) and it is, all well and good.
I believe #1 will not gain you flag weight automatically, but #2 or another flag type might. So technically you can gain flag weight via abuse if others VTC after you and the question is closed.
I'm not too sure it's important, though. If the flags aren't auto-dismissed then in case #3 above you might get your flag declined after closure, since there's nothing else really to do. You don't want to punish the good guys. And even a flag made just to get flag weight can attract 10k+ users to the question who can close or add their own flags, so it could still be useful.
That said, I've entirely lost track of which flags are mods-only and which are 10k+ and which don't show up at all but are silent in the background, so maybe I'm over- or under-complicating this.