Yes, even for Democrats with simplistic Vote Blue No Matter Who agendas, Bernie dropping out is not helpful at this point.
Even if policy detail doesn’t matter much to them, Bernie has a massive, dedicated, engaged base of supporters for whom policy is everything.
They’re passionate about Bernie’s policy ideals, much less (I think) than they are passionate about Bernie the man.
Keeping this massive supporter base engaged requires keeping Bernie in the race, pushing his progressive ideals, influencing the Party, and pushing Biden left.
Force Sanders out now, and watch his supporters disengage just like they did in 2016.
And that’s just the practical electoral argument.