The other side is they didn't know it was only old women in the home.
It's also entirely possible the warrant was unjustifiably a high risk warrant. In that case, SWAT could serve the warrant, and you get this situation. But that's not SWAT's fault.
Obviously it's no one's fault. We should just accept things the way they are and change nothing.
I'm not saying that, you'd want to find out why the warrant was high risk or deserved a SWAT response. Someone made that call, and it may not have been SWAT themselves. And you should take actions to ensure it doesn't happen again and hold them accountable. If you find abuse of power, you need to get rid of that person.
The key theme here is that you usually don't get all of the details about why things happened. Sometimes it's honest mistakes. Sometimes it's abuse of power. Sometimes there's miscommunication.
I further believe that this lack of justification is routine. Even if there was a good reason, that do this routinely without being either compelled or persuaded to supply it is by itself evidence our police are militarized.
American police collectively lost a lot of trust and authority. Obviously the most significant aspect is actually murdering people like George Floyd in plain sight while wearing a badge. But dangerous stunts like this are a contributor as well. Do they want to regain our trust?
These kinds.
I'm going to reiterate that it could have been overkill or poor judgment and that we don't have all of the information.