Does modern hifi make 80s records sound thin

I just bought some very flat Adam active monitors for my studio and got out Uncertain Smile by The The, Rip It Up by Orange Juice, Let's Dance by Bowie. They have for some years sounded harsh, thin and brittle. Now they do not. Do you think a taste for agressive brighter hifi is making 80s and early 90s records mostly hard work to listen to? Or have I finally found a decent system for listening, even though it is supposed to be for monitoring?

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