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noooooooooo.
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as an ex-theatre technician / set designer, putting care into your props and environments is not only really helpful, but it can be joyous. easter eggs, symbolism... theyre an invaluable asset to composition. in that particularly there should be a symbiotic relationship. but dont draw them the same - or at least, dont decide thats the only way. approach both character and environment drawing with the same level of care, but dont approach them the same way.
scott mccloud wrote some really interesting stuff about how cartooning vs realism has been used in comics - particularly european and manga. its often the case that characters are cartooned, in a very realistic environment - the simplified characters entered a more universal conceptual realm where the reader could wear them as a mask almost, and enter this sensually stimulating world of more detailed, realistic environments. similarly, props would vary from cartoony and realistic in manga depending if you wanted to focus on their idea, or physical beauty - a sword in a fight is an extension of your character, so its a cartoon, it has life and movement. then they stop to look at the hilt, and its in full detail, its an object, it has beauty.
i imagine on the flipside you could do super cartoony backgrounds w super realist characters, and explore the impact of that combination (which i might do, actually, eventually... copyrighted. watch out)
also, if you wanna look at a comic using environments to full advantage, i recommend vertigo by lynd ward. it predates the conventional graphic novel, and was a silent novel in woodcut prints - no / little text. the environments provide a lot of the symbolism, make the compositions pop, and tie together the entire story.
also, like, here by richard mcguire, obviously.