The Poison Lawsuit Seems Bogus

So the boys in Poison are being sued by a now-defunct 80s band called Kid Rocker. The suit comes from Billy McCarthy and James Stonich, former members of Kid Rocker. Basically, the Kid Rocker members say that Poison ripped them off. Their lawsuit alleges that some of their songs were incorporated into Poison tracks, including the famous singles "Talk Dirty to Me" and "I Won't Forget You."
Apparently C.C. DeVille auditioned for Kid Rocker in 1984 and was given demo tapes of the band's songs. According to Kid Rocker, that's how Poison stumbled upon the obscure band's songs.
Capitol Records and EMI Music are also named in the suit. In addition to damages, McCarthy and Stonich want an injunction that prevents Poison from performing certain songs.
My thing is this: why wait this long to sue for copyright infringement? It's been over 25 years since Look What the Cat Dragged In came out. If you were a musician back in the 80s and you thought Poison of all bands ripped you off... wouldn't you be squawking a fit to any and everyone who would listen? This whole thing reeks of a cash grab. I know I should wait and reserve judgement, but it's hard on this one. What do you think?