Not all art is intended to "say something". Sometimes you want a piece of artwork because you want a portrait of your D&D character for the character sheet. Sometimes you want some background for some color in a slide. Sometimes you want a thing you like in a different style[1]. And don't get me wrong, if you're able to hire an artist for it, and you want to, you absolutely should. But there's nothing wrong IMO with using a machine to do it for you either. You can hand cut dove tails for your drawers with a little practice, and I've done it. I'm also not going to judge someone for using a jig, or buying a pre-cut drawer. You can hand make ravioli with a flour, egg and a rolling pin. I've done it. It was incredible fresh pasta. It was also a ridiculous amount of work and I'm just as happy to buy pre-made ravioli from the store, or roll out the sheets with a pasta machine.

[1]: https://www.inprnt.com/gallery/canadianturtle/pacman-ukiyoe/

If you something is "art" then it almost by definition will "say something" if only the expression of an artist and their intention.

If you are talking about the background colour of a slide, that is not "art", it's a simple choice.

The portrait for your d&d character - if you used AI to generate just because you need any image and you don't care, you need a representation, then it may be difficult to classify that as "art". If you drew it, regardless of how bad it is, and you like and appreciate and connect with it, that is "art".

Of course, we may all have our own definitions of "art"