What does sensible gun law reform even look like? I mean in this particular instance the shooter shouldn't have legally been allowed to possess a gun, but he had one anyway. I'm not sure how any sensible gun law reform could have stopped this.
It is about preventing these kinds of things from happening in the future in a more general sense, outside of the exact particulars of this instance. It needs to be made more difficult for dangerous people to get their hands on weapons that can cause this much damage, and nothing is being done about it.
It's true that he should not have been able to legally possess the weapons that he had, so maybe they could introduce more stringent laws around reporting of violent crimes that disqualify gun ownership? They could regulate private sales more heavily and require licensing/registration for individual firearms on a national level, and not allow private sales without an official transfer of registration. That would prevent people circumventing their disqualification easily by buying privately.
If we look outside of this one event, and back to the Las Vegas shooting, the bump stock modifications that effectively turn a semi-automatic rifle into and automatic should be outlawed, with possession being a criminal offence. There is a number of things that could be done on multiple levels to decrease the risk of these events happening with the frequency and severity that they do.
Thoughts and prayers without any action to back it up is cowardice, and that is why people are angry at Ryan and politicians like him. They are making zero effort to prevent these things from occurring, because it's too difficult. The absolute lack of political will to do anything here is frankly disgusting.