Preflop I pot it simply because you can maximize your EV by charging them more to see the flop and you will lower the SPR, which is good for your actual holding. On the flop I think in live PLO games with an opponent that you describe as pretty wild, I would just pot it over his bet with what the SPR is. When you put $490 in, you basically are saying I'm committed anyway, so I just try to get it all in now. I don't think you meant you wanted to get him off of worse flush draws, but even if you are up against two pair plus, you are doing well vs his range overall. You block some top two, so it makes it a little more difficult for him to actually have two pair, but the main point I will make is a lot of the hands that he will bet/call it off with will often be combos like pair+draw and combo draws that you are in good shape against or even often absolutely smashing. I would want to capture that equity now and not let any action killing cards come on the turn, so yes I pot it and am happy to get it in with him on the flop. Whether you shove or not over opponents in spots like these depend on factors such as:
1. How is my actual hand doing vs his get it in range?
2. Is it better to shove now to best realize my equity before bad/action killing turns come?
3. What am I actually repping with my line and does it make sense for me to have those combos in my range?

zzzzzzzzzz, arr in.