SLS was already made redundant when the Falcon Heavy flew.

'Let’s be very honest, We don’t have a commercially available heavy-lift vehicle. The Falcon 9 Heavy may some day come about. It’s on the drawing board right now. SLS is real.' - Charles Bolden

Note the reason given here isn't that the Falcon Heavy didn't have as large a payload capacity - that excuse came after it started flying years before SLS, because apparently we're supposed to pretend things can't be assembled in space over multiple trips rather than sending up a multi-billion-dollar rocket.

I'm just wondering what the excuse for keeping SLS around will be after a cheaper vehicle that can beat its payload is here. Jobs, for sure. What else?

Isn't it the case that f9h's lift capacity has increased over the years due to engine improvements and stage lengthening..? Iirc fairing size is still a major limiting factor.

They have a bigger fairing in dev for the military, and the gateway launch

Exactly. But not at the time of the "f9h is not heavy lift" quote

The quote didn't say Falcon Heavy wasn't heavy lift, which was my point. It said Falcon Heavy was just something on the drawing board, versus SLS which was real. Except then Falcon Heavy ended up flying years before SLS eventually did.

Fine, but my point is falcon heavy wasn't really a properly competitive heavy lift at the time, and arguably still isn't. Though it will be soon.

I concur not much excuse remains. I suppose FH needs to be human-rated, but Falcon 9 and Crew Dragon module recently achieved that rating so FH could probably get it too, and sooner than SLS could be ready.