I wish this were true, but I can tell when someone thinks I'm a weirdo for eating out alone. Just a month or two ago I went to a McMenamins (a pub/restaurant chain in Oregon and Washington) to have lunch and poke on my laptop, and the guy seating me literally asked if I didn't, like, have a wife or kids or anything.
Hard to judge, if you weren't there and don't know what was said verbatim, don't you think ? You may be right, but you also may be very wrong. I really dislike the piling on in thread. Jeez!