how is 4b/call vs someone so loose going to be bad in hand1? Unless he views you as a meganit who has an absurdly tight 4betting range or something

hand2 I'm not folding, but I think jamming is non-optimal vs someone so tight. I also think there's merit in calling UTG's open vs a lot of 100NL regs (the ones who have high fold to 3b%) who are gunna have very tight "continuing to 3b" range when they open UTG.