It'll be interesting to see whether Buttigieg's firmware upgrade has brought him any closer to Biden's less-attached supporters. Or maybe the idea is to target the ~20% who aren't supporting one of the top four yet? The latter group is more heterogeneous, but there might be more for him there.
Buttigieg is a robot. I 100% agree with you on that. He's the exact opposite of Yang, who is completely authentic, transparent, emotional, full of integrity in everything he does. All of this is of course a 100% rebuttal of Trump and his presidency. However what paints the starkest contrast between the two of them - Yang and Trump - is the fact that Yang always, in 100% of cases, tells the truth. That actually makes him a compulsive truth-teller.