Sorry didn't mean to go off on a tangent, it's just I like trains, and Spain (and have an Interrail trip coming up and I was considering including Spain. They are famously Interrail unfriendly though)

I followed the accident but not much news following, so that's really really interesting. I didn't know Madrid-Malaga still has no service, nor that Renfe had set up a bus company!

I haven't been to Madrid for a few years. Sad to hear the Cercanías is so bad these days

If you ever visit Madrid again, I can say that buses and the metro usually work pretty well (they do get quite crowded at peak hours, but I guess that's the case everywhere) and you probably won't need to rely on Cercanías for typical "tourist" activities. If you're planning to travel between cities though, I'd be a bit wary of long-distance trains!

PS: Roads are becoming worse as well but I've seen worse abroad. Just wanted to point out that infrastructures in the country are decaying quite a bit in general.