If you're tired of dealing with them, you don't even need to express empathy as the gp post so eloquently described, just don't throw it back in their faces if they show signs of breaking away, even a little bit. If you don't have the energy to respond to them and try to expand that break, maybe someone else does, but if you are hostile you'll just drive them back into the darkness and make them that much harder to ever pull away.
None of this means you have to welcome them with open arms, or even forget what they've done. Just give them a space to be less awful than they were. As the gp post said, thinking strategically we need to break away as many supporters of maga as possible, but that doesn't mean they immediately, or automatically, become allies.