Steam Deck does not source .bash_profile

From my testing it seems the Steam Deck does not source a .bash_profile or a .profile file inside ~ (by default /home/deck) After some investigation there is a bash profile deep in the OS which has the following:

───────┬─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       │ File: /home/.steamos/offload/root/.bash_profile
───────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
   1   │ #  SPDX-License-Identifier: MIT
   2   │ #
   3   │ #  Copyright © 2020 Collabora Ltd.
   4   │ #  Copyright © 2020 Valve Corporation.
   5   │ #
   6   │ #  This file is part of steamos-image-recipes.
   7   │ #
   8   │ #  steamos-image-recipes is free software; you can redistribute it and/or modify
   9   │ #  it under the terms of the GNU Lesser General Public License as published
  10   │ #  by the Free Software Foundation; either version 2.1 of the License, or
  11   │ #  (at your option) any later version.
  12   │ 
  13   │ #
  14   │ # ~/.bash_profile
  15   │ #
  16   │ 
  17   │ [[ -f ~/.bashrc ]] && . ~/.bashrc
───────┴──────────────────────────────────

There is also a copy of this file on /etc/skel/.bash_profile My understanding is that .bash_profile [should source](https://unix.stackexchange.com/a/404877/606347) .bashrc and not the other way around, but in this case it seems there is no way for me to add a file on the home directory that only gets sourced once and not on every single new shell. So I have the following questions: 1. Is my assessment correct or could this be some SteamOS / ArchLinux quirk? 2. Should I source my aliases and exports on this ~/.bashrc or modify the system files to also source my ~/.bash_profile? Thanks in advance! ---

bash --version      5.01.16
konsole --version  23.04.2

Steam LCD model, version: Linux steamdeck 6.1.52-valve16-1-neptune-61