You've basically just dismissed the difficulties Ambrosia faced while learning. Learning while dealing with the major life changes of hearing loss, tinnitus, vertigo and so forth all while raising kids and most likely working. Well done!
No one has argued that learning through lip reading or speech reading only is optimal. Only that arguing for other teaching methods simply because lip reading is tiring is not a very convincing argument. There are other arguments that could be much more convincing.
