I doubt that. Remember at SFO you have to clear security again unless you are going between T2 and T1. Also, security at T2 is often a total zoo. I have on occasion walked land side from T2 to T1 to go through the security gates there instead.
Not true. You can walk between Gate 60 (T-3, E wing) and Gate 100 (Int Terminal) airside without going thru security again. However you cannot go from AS international (G wing) to T-2 without going landside. I never have a problem at T-2 but then again I have Pre-Check and CLEAR. Well worth the $$$ for anybody who calls SFO home.