Gun Control & RKBA

Federal laws on buying new firearms are as strict as ever.
The take away is NOT STRICT ENOUGH.

True the AWB expired, but homicides by AWB were and are a tiny amount contribution to the statistics.
Yes, and toddlers shooting each other is a small contribution as are mass shootings and so if we discount each segment of artificially defined category we arrive at no problem at all! Define it away and problem solved!

I think more states have universal background check requirements than ever before.
Whoopie shit! Our 'background check is a joke. 40% of reporting agencies don't bother 'cause it's voluntary. It isn't a background check because it doesn't look at your background only half of your criminal record, not social media or employers or family. It's a fucking joke.

Stand Your Ground Laws have nothing to do with the availability of guns.
Availability of guns has everything to do with using a gun to stand your ground. You're not stupid so don't expect me to be stupid.

Concealed carry laws have loosened up considerably, but its what the people want.
No, it's not. It's what the gun lobby wants. In Texas before the "Constitutional carry" (it's not Constitutional) was passed polls showed 80% voters opposed and the same for law enforcement.

Having said that, universal background checks and raising the Federal age for rifles could really help.
I've addressed background checks above and throwing your "it's a tiny % of gun violence" back at ya' age for rifles is a pittance. I'll take it if I can get it but it's not a real fix.

My point is that we had even easier access to firearms in the past and we didn't see the mass shootings and overall gun-related homicide rates we do now. Something has changed with the American public with regard killing fellow citizens.
Your point is misplaced and mere diversion. It's no more difficult nor easier to get a gun today than any other time. There's just a lot more of them to get. Never has there been more guns than people than now.