I've split branches plenty of times and never got a hermie from it.
If the plant has recovered fine and no other issues have appeared, it means you're working with good genetics and your care is on point!
Next time you split a branch, try using Teflon (plumbers) tape to hold it together. It's not sticky or anything and works wonders! I always use it for split branches, plant doesn't grow into it or anything and can be easily removed after healing.