Of course not - one dodgy image does not a bad song make, but I'll probably enjoy the song a little less. An example of this is Jimmy Eat World - Jim Adkins' writing over the past couple of albums has fallen away somewhat - I still enjoy the music, but lyrically he has kind of stagnated. It doesn't mean I hate Jimmy Eat World, I still enjoy the music just as much, it just means I don't really enjoy their newer stuff as much as the old albums, as the lyrics aren't as good.
Another example is a band called The Blackout. A friend recommended them to me, so I gave them a listen - musically I quite liked the track I heard, but at one point in the bridge, the lyrics were along the lines of:
"I die
You cry
We Lie
Everytime."
That ruined the band for me - I haven't listened to them since, so I guess it's the extent of the cliche - a really horrible one might put someone off, but a minor one every now and then isn't going to end your songwriting career.
Yes, it's a horrible rhyme. Even Bob Dylan forces a rhyme every now and then. I won't go into it now, as I don't fancy a big argument on it, but I don't really like Dylan's stuff much at all - he has his moments, but on the whole I don't think he deserves the level of adulation he gets.
The thing is, when you use examples like that is that you're assuming that because it's written by someone famous for songwriting that it MUST be an amazing lyric that no-one else can touch.
Be honest, we see stanzas of that quality or better most weeks here - not because we have brilliant writers here or anything like that, (although we do have some excellent writers at times) but because it's not really that amazing.
Look at it objectively, break it down, it's not really that complex or well-written. Perhaps I have an unfair advantage here as I've never heard this particular song, and therefore aren't putting it to music, but yes, those are forced rhymes. Personally, I disliked the vain/chain rhyme more than the me/key rhyme anyway.
On a completely unrelated note, is it just me or am I holding up the UK end of things on my own in here at the moment?