60,000 players per day, on Steam alone. Not including Xbox, not including PS4.
There are roughly 60 employees (employees -- not developers) at WildCard. That's one employee per 1,000 users, IF they are all answering questions. It is much more likely that there are one or two people actively answering questions while people are doing the actual work of programming/fixing/running company business.
So, for each person actively answering questions, there are 30,000 Steam users to support. Again, not including Xbox or PS4 users.
Now, Reddit is just one outlet where they can answer questions. Then there's Facebook. And Instagram. And so on.
Most of the time, they're already aware of the problem -- should they answer all 30,000 inquiries when something goes wrong, and cover every conceivable outlet to answer questions?
Most people are generally unaware of the logistics involved, and have probably never been involved in tech support.