(LC) theory question - whatever happened to calling 3 bets with scs?

[deaders]

Ive been posting in ssnl for a good while now and remember it wasnt that long ago that everyone was a huge fan of calling preflop 3 bets with suited connectors, even oop, and of course small pocket pairs. The argument was that the implied odds are huge etc etc.

Lately I have noticed plenty of people advocating folding to the reraise. Say for example its 100nl, you raise utg with 55 to $4, a decent tag makes it $12 in the CO, plenty of people seem to be saying fold preflop, doubly so if you hold 56s or something. I had been folding more in this situation recently before I noticed this advice trend - were people overestimating the implied odds in the first place, or are do you have less implied odds now with good tags 3 betting a wider range therefore being less likely to stack off every time they 3-bet?

Or was I missing the point entirely and its better to just call the 3 bets by bad players with small pps and scs knowing that they are much more likely to lose their stack with an overpair if we flop huge?