Some are. Like simple Arm and record track. The way it's done now, is not for fainted heart users, who don't want/need another program, and want a simple way to record 1-6 tracks on top of BIAB arrangement. Function is there. Implementation is not user friendly.
Misha,
In relation to recording in BIAB, I personally think it is very friendly these days. It is also consistent with all the other menus in the way BIAB uses "Bars | Beats |Ticks". Knowledge of these bars/beats/ticks is only need if a user decides to punch in a new section or overdub an existing section (#4 on the image below).
Recording BIAB is a one-click, two-settings process. After clicking on the recording icon (#1), the settings window opens and then it's necessary to select what section to record (#2) and which track to record 2 (#3).
--Noel