I disagree and think they do care. I found a post from March announcing they had banned an unspecified number of accounts for cheating:
I think the process for handling bans looks different from the strategic level vs. from our view in the trenches and I’d guess it’s a lot more complicated than watching a specific area for bots. I don’t know Blizzards process for identifying accounts which need to be banned but I can think of a few things which may contribute to its difficulty.
For example, the cheaters are getting more sophisticated. I wouldn’t put it past them to use accounts to post responses like yours hoping to encourage people to leave the cheaters alone.
From a logistics standpoint, Blizzard has many games, including Overwatch, which need to be monitored for cheaters. To me this sounds like there’s potential for millions of instances to be investigated.
I’m also aware of claims groups of players will band together and report another simply to troll them regardless of whether that player has actually done anything wrong. I don’t know whether this actually works or even happens but I have no doubt many players abuse the system to try and punish others and all of those have to be sorted through. The result of this could mean a specific player may have to be reported dozens or even hundreds of times before they get looked at. There may even be a time component involved.
Their goals may also be more complex than simply banning someone. They may be trying to identify networks of cheaters as well as the players who use their services. They may also be trying to keep up on the latest techniques used by cheaters which may include having to tolerate their existence while figuring out what they’re doing to cheat.
So, like I said. Obviously, we’d like the system to work better and move faster but I have no idea what it’s limitations are. If we, as players, can do something to speed it along wouldn’t it make sense to try and do that?