"No reason to set to boost manually since it does it automatically. System will monitor low and high trigger values and initiate ideal charge values. Personally I don’t want to think about my chargers in my RV or Boat. Maybe you have reasons to want a manual boost option but I never needed that in any condition"
So we agree :) The Iota's charge profile is suitable for some but not for some others.
Some battery specs call for 14.8v as the Absorption voltage (Vabs), and that stage can take hours "depending", so Iota's Vabs of 14.2 would not be suitable for those batteries.
Matching a preference for automatics for less fuss works well if the automatic charging profile matches the battery specs. If it does not, then you have to decide what to do if anything, and nobody else can make that choice.
The big thing is to know as much as possible about how the various converters work so you can see what your options are.