well, i, personally, have had liner lock issues with a millie(and other spydies too, FWIW, you mentioned the millie, a lotta the early Ti and SS ATR's had detent issues to name another model i have had issues with and had to send back, & i can go on with others if ya want to know about 'em?), which spydie fixed, and have also had the same with BM and others(for many yrs the only emerson i ever had liner lock issues with was a BM 975, made by BM but designed by emerson FWIW), just because you didnt have any problems with yours doesnt mean others havent had issues with theres, and while i have not had a lotta issues with EKI, i can see how ya could get one, 2 or even 3 lemons, point being nobody is perfect & EKI is no worse than any others ya care to name, i have had a lot of knives and a lot of different brands, and have learned that just because its brand "X" or "Y" doesnt mean its fail proof, price doesnt matter either. i have had probs with cheapies and expensive stuff too, even a few customs, like i said no ones perfect, if they were spyderco, BM, etc would have no need of warranty departments lol, imho ya would have to have bad luck to get 3 bad examples in a row of any major brand, but its possible no doubt.
if i didnt think (know?) EKI F&F, design, material, and quality was good (great?) i wouldnt have purchased and swapped for dozens of the things thru the yrs, & spent the kinda dollar it takes to get custom emersons, so obviously i cant agree with ya, imho they are a damned fine knife, and worth the $$, even the customs which run over $1000 unless ya get them from him, i also expect quality and imho EKI has delivered, sure, i have gotten a lemon or 2 thru the yrs, had some LL issues/etc, but like i said i have seen bad ..........................(fill in the blank with whoever ya want to mention) too, nobody is perfect.
i have sent knives to EKI, which i didnt buy from EKI, or a EKI dealer, and they have never asked me where i purchased it/etc when it came to warranty issues, unless things have changed that simply doesnt matter, if its an EKI they will warranty it.