Another added reason why so many would end up in IMC (that we will never know) and get away with it is that a LOT of today's light A/C have very flash avionics including very capable coupled A/P's so that alone would temp VFR drivers to go DCT regardless of WX. Many many years ago when I started no light planes had A/P's (well none that we poor people could afford to fly) never lone a GPS! The trouble is as those that are IFR cert would know it's not just the A/C handling in IMC it's a LOT more involved from icing, embedded TS's, severe turb, other traffic, terrain, actions in case of engine failure! Scary stuff!
I'd like a dollar for everytime I'd be in solid IMC (legally) & ATC would say we have traffic at xx at 7000' (my current Alt) unverified!