Well the point is to get you thinking, so I wouldn't say it's pointless. If you've thought deeply enough about it to decide it doesn't matter, you've probably already absorbed the lesson you were supposed to learn. Most koans are completely pointless or vague, but in order to figure that out you have to understand it, and at that point you've already grown.
My favorite popular quotes are the ones that are borrowed from Shakespeare but stripped of all context, so they're commonly read as meaning something completely different.
Read books, or essays, or at least the whole dang poem (the quoted "The Second Coming" is really short!). It's nearly impossible to pack any kind of meaningful insight into a couple sentences.
I find the opposite: most quotes are incredibly insightful and powerful, but wasted on people who can't act on them, and insist on vague and pointless lives.
Why would you call that a personal attack? It's my standard opinion on quotes. I used the same wording used to dismiss them to make the message stand out more.
To paraphrase Chesterton quotes have not been tried and found wanting. They have been tried, found hard to abide to, and been abandoned.
