.the government should be ashamed that it just hasn't bothered to do anything about it
I don't think they are that interested in doing anything about it. PiS promised to rescue the coal mining industry and protect jobs when they were elected in 2015, despite the mines running at huge losses due to the falling price of coal worldwide. Szydło, even though she is no longer PM, is a coal miners daughter, so I think it's quite obvious where her loyalties lay at the time. Even though the mines have been bailed out, they really need to address this issue because the other problem is that the Silesian mines are very deep and the cost of extracting coal is very expensive.
Personally I don't think much will change in the near future. Poland has a love affair with coal and I think any government is going to think twice about abandoning the industry with the loss of jobs that will ensue, and that's presuming there is a viable and cost effective alternative available. If I remember rightly, this government also introduced restrictive new rules/laws regarding where wind farms could be built, effectively putting the kibosh on the developing wind industry.