Flying backcountry and GA sure gives a lot of experience. Unfortunately most 200hr-pilots given the choice of flying a 172 by the hour or getting into a Dash 8 or CRJ with 14 fixed salaries per year would take the latter even if it requires three years bonding.
European Airlines have been putting 200hr (or less) pilots on "medium to big" iron for decades and the system seems to work. Most captains over here had about 10 hrs twin-engine time (on a Seneca) when they joined.
What you lose in hands-on experience you also lose in chances to form bad habits. (I had about 600hrs without any meaningful twin time before I first sat in the right seat of a 50-seat Dash).