The NAACP's more relevant lately, and Jealous is well-liked as far as NAACP heads go, but...
First, compared to groups like BLM, they aren't much to younger people. Jealous was the start of turning that around, and actually relatively well-known after helping pull the NAACP back into protests that weren't stupid and getting certain local chapters under control (LA chapter, I'm looking at you intently!), but that's about all. As far as charisma goes, he's got a lot, but not at Obama levels.
Hogan is notably apart from Dolt 45 - from refusing to even attend the 2016 RNC convention, to mitigating the federal tax hike, to letting the AG go after Cheeto Benito's various white supremacist schemes. He's done reasonably well at crisis management (although not so good at long-term prevention, I'll note - but there's a lot that went into c flooding twice in under 2 years), and has the usual incumbent advantage in good economic times. Even some dem legislators are outright endorsing him over Jealous.
...and a large part of this is that they're working for veto-proof majorities, and gerrymandering the GOP out of power at every other level. a Dem governor can put pressures on them that a republican governor can't, just by using party apparatus. SO having Hogan there kinda works for them, too.
And the major lefty out of touch candidate wasn't Jealous (who is fairly mainstream as far as most issues go), it was Chelsea Manning, and I don't think Sen. Cardin even bothered mentioning her by name before winning about 80% of his primary vote.