"shove under 12bbs" is terrible advice. If he said 10, it'd be a bit less terrible, but still terrible... (imo of course)
....
When it comes to poker questions, you can pretty much bet your arse every time that the answer will just be "it depends"...
That applies here big time. I'm not 100% sure that this the best approach, but the answer i'm about to give you is the best answer i can come up with. (I'm not the best player by any means, but SNG is by far my best game, and i do win there at micro, low & midstakes for a decent ROI - so my answer shouldn't be complete crap)
I'll approach your question as if you're a total noob to SNGs, just in-case you are.
MY ANSWER:
You have to adjust A BUNCH
To adjust properly, efficient labels are a MUST if you're not extremely quick at reading hud stats... like rainman level.
more minraise/folding vs nits. (still jamming a fair bit though)
more jamming + inducing with strong hands vs people with high 3bet
more jamming + NO inducing vs people who call way too much
(coming up next, is the hard part imo - but learning it will give you a solid base for ALLLLL the rest of your play - Worth learning this FIRST)
GTO approach vs GOOD/BETTER PLAYERS - but always looking out for vulnerabilities in their approach too and exploit accordingly. Personally as a default i mark all winning players as good regs, and then downgrade them accordingly if they mess stuff up a bunch of time, giving them plenty of room for potential misclicks or temporary brain-farts. If you're new to the format, play less tables and spend a long time labelling the regs appropriately. Also noting those who clearly never make any improvements in their game. As well as those that do seem to get better over time. Some will just never adjust, so there's no point focusing on whether or not they're adjusting, just exploit away after a certain point.
Obviously you'd have to do your own homework on what specific ranges you'd want to use... ALSO ALWAYS LOOK OUT FOR PLAYERS THAT ADJUST, can't stress that enough. Some passive fish take a stand and start trying harder to be aggressive, while others NEVER do... it's all important stuff.
Once you have lots and lots of notes and labels, THEN put in some 9-24 table sessions (whatever a big session is for you), it'll be far easier because you'll have built up the ability to adjust to certain tables based on the simple colour of the labels... if green = nit, lots of green = lots more minraise/folding... Lots of dark blue (my whale tag) - lots of jamming.... it's the mixes that get tricky, but you'll work something out i'm sure - if i can anyone can.
GOOD LUCK!