Sunburst aloe got huge which is awesome, but both have a hole in the middle now?

Tagging this "help" is a little dramatic lol. I've got two sunburst aloes in my front yard, I planted both of them like 5-7 years ago? Maybe planted them a year apart? I don't know. I'm not especially fussy about my yard. I'm in Santa Rosa CA which I think is zone 9. Anyway these guys have been absolute champs in all the weather we get, generally a mild climate but they've handled some cold snaps with a hard freeze, temps of 110, dumping rain, etc. They've never looked worse for wear. This year both of them – and they're both like 10x the size they were when I planted them – have like a dead\bare spot in the middle? The plant is still super happy but the center doesn't have any leaves. When these get big do they kind of turn into donuts? There are branches in there but the leaves are kind of doing a halo thing?

I stuck a sculpture in the one that's closest to the sidewalk kind of for style so the dog walkers wouldn't judge me. Should I consider…. Dividing them? If I were to do that how would I do that? I really don't like to mess with plants that much, I've figured out what works with my gardening style (benign neglect, maintaining a little chaos and a lot of habitat for creatures, no irrigation) but if I could turn these 2 guys into like 4 or 6 guys I might be willing to dip a toe into being a little more hands on …

Advice?