This is just a situation where we need to put each other in the other's shoes. I understand your frustration in not getting a, hey chat here reply, but I hope you can see my POV. If i replied to every @ or DM I got on twitter to say that, I might as well just be using my Twitter for work then personal.
This really turns out to be a no win situation in a lot of cases as you can see, if i ignore I'm a bad person but if i reply then I'm just setting the expectation that its normal and what i want. Hence the choice to just not react on social.
Just to clarify as well, this doesnt mean I'm not seeing what you posted, if it s a bug or something major, i typically go through my normal reporting channels like i would any issues, i just don't ignore what I've seen and pretend it doesnt exist just because it came from twitter. I just don't actively reply.