Yes there are multiple ways to approach art style for games. For many small devs pixel art is a good fit.

I think this boils down to you just not liking pixel art, which is fine, but you're going a step further after getting answers and just acting like the answers aren't good enough. Pixel art is efficient to make and many people find it aesthetically pleasing.

i love the gameplay of slay the spire, but i personally do not like the graphics at all, it looks like bad clip art to me, but like any opinion about the look of a creative work, its a matter of taste, and what you think is good is a matter of your personal experience of it. Similarly some people have a taste of pixel art. There is no such thing as objevtive good or bad in creative works, and other peoples taste and experiences dont have to make sense to you or accomidate your sensabilitys.