You're using flags the wrong way. Two downvotes aren't 'extreme'; users aren't require to disclose why they downvote (see here for reasons why) and ♦ moderators can't do anything about it – they're able to see patterns of one user repeatedly downvoting another one, they can't see individual votes.
I'm the moderator that declined these flags.
To put it somewhat bluntly: There's nothing that I as a moderator can do about downvotes, unless there's clear evidence of vote abuse.
All I can see is that a question that had ... formulation difficulties that are hard to put into words and that skirts the line of being on topic was downvoted twice.
That's not ...
Walter, I understand being downvoted can feel harsh and hurt. And I agree that downvoting without commenting isn't constructive. But saying "moderators useless" is verbal abuse, and fighting what you see as abuse with abuse is not going to help your cause.
I have proof that they are doing a bad job
In need of moderator intervention.
This just ...
There are a lot of sorts around, and their spelling varies. The rationale for the irregularity is likely that their names are irregular. Radix sort has a space between them, quicksort has not. It is like this on Stack Overflow as well.