Why wasting potentially useful votes from 51-people for "Not a good example"?

Question

New 51-folks like me would like to vote for "Not a good example" sometimes. We are tempted to vote for the opposite tendency (on/off-topic) instead, but what we really mean is "Not a good example". Voting for the opposite tendency won't prevent the example from becoming a "reference" example.

What is the real reason for the required 150 reputation? I can imagine two reasons:

(1) Maybe there would be too many "not a good example" votes if those were allowed to everybody. But it's possible to choose an appropriate limit.

(2) This lowers by 2 the reputation of the example's author. A solution for that could be to add some threshold (like -2 only after 5 votes).

Is there something else I miss? Except for that, I really enjoy this system.

Answer 1

Simply: it opens itself up for abuse.

What would keep someone from opening up ten dummy accounts, all of which could then do nothing but vote NaGE?

It's not that hard to get ≥150 reputation. All you need to do is to propose several good example questions, or earn 200+ reputation on any other SE site.