No reason not to bet. Going to get called by a lot of FDs etc and you also need to protect your hand. In a situation like this, a lot of people will fold like Kxxx and Qxxx and those hands naturally have decent enough
equity against us and what differs PLO from NLHE is that we want to protect our hand more and hence betting to get these hands to fold out is not necessarily a bad thing and even if they call we can get them out with a double barrel etc. We also end up seeing a few calls from like JTxx or FD that will fold to a double barrel on a non connecting card. So again, I'm betting here and any kind of safe turn, im double barreling.
I mean its not great, not having position but essentially, hands like KQxx or wrap FDs are almost always going to raise us on the flop so it would always be an easy fold. They never
bluff these board either so obv bet/folding the flop is superior to check/calling or check/folding.