Man! Talk about a bunch of clowns back then ... oh, wait ...
Seriously, we all would like to see valid thread titles, no one more so than me. I even edit several titles a day of the worst examples. However, what to do about it overall is another kettle of fish.
Do we edit the titles? Not enough time in the day to do that.
Do we ban the offending member? Much too harsh a punishment for such a simple problem.
Do we delete the thread? Not a bad solution, if we can catch it before any substantial posts have been added. Otherwise, it's not fair to the respondents.
Should we PM the offender? Again, the time required would be even more prohibitive than editing the title.
You've identified a problem, or rather posted about the problem, since most of us already knew it was a problem. What is your suggested solution?