hello I too have a 2010 Honda Insight (work vehicle) … yes the AC system is a crap design which changed after 2013 with electric AC system on the newer hybrids. My wife has a 2020 Honda CR-V Hybrid which is nice and AC runs cold regardless of engine on/off. But highway milage isn’t very great...
2010 Honda Insight with 170,000 no issues at all,I do regular maintenance it’s the work vehicle. 2020 Honda CR-V hybrid which has better hybrid system then the insight love driving in EV mode. I wish the maverick would have that button