I feel like this is indicative of one of three scenarios:
1) For whatever reason, there is a high turn over rate at your company. This isn't always a bad thing, but if a company is always hiring, it's usually because they are consistently losing people as well.
2) You are experiencing crazy explosive growth, so much so that every month you need to hire more of the exact same positions.
3) The requirements for the job are poorly defined. This would lead to a lot of people (mistakenly) applying to a job that they have no hope of filling the requirements for.
Whatever the case may be, I really think the only reason you guys are getting any kind of backlash is just because it is becoming a common theme to apply to DeviantArt and never receive at the very least a "Sorry, not what we're looking for". Do it to enough people, and there's bound to be a response.
EDIT: There is a 3 month period in which 20% of new people get fired?! No wonder you are always hiring. You are effectively telling people to leave whatever job/security that they have, then cutting a non-trivial amount of them loose because they weren't a good fit? That's not their fault, thats a problem with the hiring process. Who knows what it does to the moral of the other workers. Oh wait, they are all remote. No one ever finds out...