Well I'm pretty sure that's the direct opposite of what your post is especially with your "if it was someone else". I don't think that's bad to wonder that but it would certainly point more to a larger societal problem within the police force. And that's exactly why you got some of the responses you did (ones not focused on water rescues).
This is what I was talking about. It's expecting the police to equip their vehicles and themselves for something that which for many areas is the responsibility of the fire department for the reason that they have the ability to have ladders on their trucks, they have rescue training as part of their job because that is their job.
If these police officers in particular had an indifference towards life that is specific towards them, but what you've intermingled into your point was the actions they can and should do to save a person including "Throwing something that floats or tossing a rope is just 2 things that came to mind." "I would have gone to stores or nearby drivers or whatever and been yelling my head off trying to find something that floated or a rope" and then you've made it about "should review their training program to include alternative, safe options." You can't just toss a rope (and it's much more complicated than that) you can't just go to a store and get a rope (for one in this case watching the video that I can see they were on a bridge and even the landing area around it I see no store in sight for that and no drivers nearby and it was at night).
I honestly do empathize with where you might be more thinking, like you see a public servant and you think they should do any and everything out there, but there are limitations as well. I do think I read that they may be looking into have at least more training for police on water stuff but how extensive and how many IDK; it does take resources including funding and equipment, etc. It's hard I think because we are so used to calling for help from police officers.
This is a video of training from 2017 (and the article is press release from the amusement park from 2020) at my local amusement park (correction from earlier they train at one of the water rides at the amusement park rather than the water park connected to it). In our area some police do go there for training (to my knowledge it's normally just one police department) the majority being fire department (my city sends the fire department) and then there are civilians as well. In the videos they use an extensive rope system tied to trees and themselves in a daisy chain style, they use inflated fire hoses now amongst other things and train their bodies. It is certainly not something that even a trained person can just go to a store and purchase a rope and throw it out there (you're talking about a human body the rope actually needs to be strong, rated to take it otherwise you're going to risk easy breakage of the rope) and you can't just throw something that floats either (that's like the movies). And ideally when these rescuers are going in the water they have on gear that is designed to keep them safe such as full body gear for floatation for themselves.
https://www.worldsoffun.com/blog/2020/fury-of-the-nile-helps-train-local-first-responders