Ooh yeah I see, not pretty. Is that reversible or is that a goner?
I think the branching on the Beaucarneas is kind of variable as to when it occurs. Some of that (maybe most of it) would be genetic. I'm not really spoiling my plant. But yes, that's a pretty small flowering size, and it portends good things (branching to come in the near future).
Those 5 young Pachypodiums are 1-2 year old seedlings from the mother plant at their left. I would imagine they would have trouble with your insane heat. They really like the water in summer when they are leafy, very un-succulent-like behavior at that time, but you know that already, I'm sure. Here in our mild climate I water the active Pachys twice a week, but our summer high to date is 76°F and we don't spend hardly any time over 90°F.
The Aloe marlothii & hybrids here seem to be pretty tough plants overall. Good with drought too. Maybe yours needs to get bigger to flower? Some of these tree aloes are late bloomers for no particular reason that I can tell. I'm still waiting on a ferox about the same size to bloom, years after putting it into the ground.