If conservatives are smart, they won't try to make a martyr our of Roseanne, but will rather just dismiss her as someone who got themselves fired over tweeting something stupid, and move on.
I don't have a problem with conservatives pointing out some left-wing hypocrisy where famous liberals got away with saying/writing really outrageous things, but they need to keep their distance from Roseanne.
If they don't, they will just feed into the narrative of, "Republicans are racist, and Democrats are tolerant and sensitive."
All of the extreme SJW crap has pushed a lot of centrists and moderate leftists right, hence the Trump victory in 2016. The left still hasn't learned from this, but the right is doing themselves so favors by jumping to support people like Roseanne.