This is just me, but I'm not a risk taker. For people who can stay steady in the 70s, I think the advice you're getting here is great. It wouldn't work for me though. When I'm in the low 70s, most of the time I'm on my way down, not in steady mode.
Before I got my cgm, I've bolused before eating when in the 70s and dropped lower, even after eating.
So for me, depending on how much time I had, if I was in the low 70s, I would bump up my bg with a couple of sweetarts (2 g of carb each) and wait 20 minutes. Once I saw I wasn't continuing to drop, I would bolus then eat. But that's me..and I also have the benefit of a cgm so I can see if I'm trending down.