Thanks :) Depends on the stakes you're playing but at PLO200 and lower people very rarely bluff river so I wouldn't be really afraid of being bluff raised. I also think that on the mental game level it is important to understand and accept the fact that the aim of the game is not to avoid BF but to make the play with highest EV ;-)
And btw, in my opinion deciding between BF and CC lines on the river is one of the most important postflop aspects in PLO.

Hi, you need to compare the amount of bluffs to vbets. Remember that your opponent will usually check back with some SD value hands like AK, AT, A6 and he will be usually betting with high flushes and blockers. In the actual hand his check back range otr is around 60%. His air is calculated from the rest 40% of his range, => 11% from 40% is 27.5%. Do you see the difference?
So the amount of bluffs/(bluffs+vbets) needs to be at least the same or bigger than your equity needed for call.

Tbh I am not really sure about that. Imo it should be more or less over 1.15. Why? Because it is an average from your check/calls OOP and calls IP.
OOP everything above 1.00 should be fine (you can filter for check/calls)
IP your CRE will be always bigger, sometimes your opponent will shove into you the rest of the stack when you hit the nuts etc. So having CRE of 1.00 IP means you must be doing something wrong. Therefore your IP CRE should be around 1.25-1.3 or bigger. According to my analyses this is more or less an equivalent of CRE 1.00 OOP.
Therefore your total CRE should be more or less over 1.15 but I would really appreciate if someone can confirm that.

1) Good point, you are right, I should have raised, especially given the fact that I have some dynamic with Arnie. And he could definitely find a call with some worse hands. I was focused more on the very clear sizing tell of my opponent and missed the obvious ;-)

2) It seems weird because full pot raise is around 51 (3x12+pot) - on such a draw heavy board it makes no sense to raise only 32 with J9 because I can call a bigger raise with sets, lower straight or a hand like 2p+FD. This sizing usually means to me a thin value raise with T8/88/T8+FD/46/96 type of hands. I expect that most of players with J9 would raise >$40. These sort of plays always look a little bit suspicious. Therefore most of regs in his shoes would like to get as much value as possible with J9. As you can see this time my reads were wrong ;-)