I cannot understand why 'SLF' as a term would have any derogatory sense at all. Sound more like a compliment to me!
F3G, regarding no have your child on the lap (unsecured) for T/O or landing and comparing that to Eurostar.
There is s slight difference. Eurostar will use a vast number of miles to slow down, your average airplane will make iot within ONE. Your child is not going to be in your lap anymore, trust me.
I have been in one take-off reject at 80 kts, and that was already brutal.