SLF is a common tongue in cheek name for passenger on this forum, it is part of the common speak and has been for donkey's years.
PPRUNE is intended for pilots and those associated with the aviation community. Once you have been here a while you will find people from outside our industry struggle with our direct approach to issues. So be it. If you can't stand the heat get out of the kitchen.
Most people read a lot on a forum before they make accusations, especially to avoid gaffes like this one.
Apart from that i don't think SLF were put down in any way. I would suggest the gist is that they did well (not panic) but would do well listening carefully to the CC briefings (which may be improved after this ditching)