usa – Why booking services never consider MIA for transfers?

I noticed that none of the services I tried to find a flight offer a transfer at MIA airport. However I can come up with what Kayak calls “hacker fare” by combining individual flights. Is there a particular reason that MIA airport doesn’t show up as a transfer/layover option?

I’d like to book a flight from SVO to MSP. However, given current circumstances with pandemic, direct flight to USA with Aeroflot is the only option for non-citizens. All services suggest overnight layover in New York that I’d like to avoid. Under normal circumstances, AMS and CDG are preferred options for stops.

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