>>76710417 (OP)
You don't see jacked people walking around with 6 packs everywhere because it's really hard to exercise for a long time consistently. There aren't many people like that.
What there are many of are people who are trying to get into exercising and people who don't exercise consistently and are perpetually at a beginners stage.
I reckon /fit/'s demographics match those of real life, so there are a few people here who have been exercising for years, but most of the posters either haven't started, recently started, or recently started exercising again at beginner level.