No, I wouldn't, but because newer models are available.

Although you might find a used one on Ebay for less.
For a beginning photographer who is noticing that a cellphone camera isn't the perfect tool in all situations (yay!), I would probably suggest something in the Canon EOS Rebel line. They're not as expensive as the higher end dslrs in the Canon EOS line but still quite capable. These days mirrorless cameras are also worth looking at.
Don't get hung up on brands. Exposing an image is the same regardless of camera, as the relationships between aperture, shutterspeed and iso hold true across brands. Different brands have ergonomic differences, so hold them and see which feels best to you. There are can also be differences in menu access and items.
Reef photography is a niche in the photography world and as such cameras aren't made to auto white balance under high color temperature reef tank lighting. Hence the "too blue" thing in many reef shots. By shooting in RAW and setting the white balance during post production, the image can look like what our eyes perceive instead of the ultra blue smurf land that point and shoot cameras on auto tend to produce.
When shooting in RAW, instead of creating a jpg file to which white balance and compression have already been applied, the image sensor data is saved in a file. That information can then be post processed in software like Lightroom outside the camera. The photographer can then make decisions about things like white balance and exposure instead of the camera doing so.
Realize too that once you have a camera body, you'll need lenses, and not just one, as different lenses have different purposes. You can start with one but that's somewhat like playing golf with just one club. My shot above is done using a macro lens. But that same lens, as great as it is for macros, is not the choice for trying to capture a wide view in a small space, or a small bird in a tree.
And there's also the depressing realization that simply having the gear doesn't guarantee good photos. Even when one gets the hang of technically exposing images properly, there's the art of composition to master.
Sorry, I don't mean to be a downer. Just saying having a nice camera and making a pretty pic aren't necessarily the same. I personally enjoy the process and smile broadly when I produce something I like.
Summing up, I suggest going with an interchangeable lens camera, dslr or mirrorless, that can shoot in RAW and feels better to you when you hold it than other models you're considering do.