Can't really tell until system switches from None back to Boom state (for apples/apples comparison why I recorded passenger payouts at Allied) -but so far I don't really see the 10% supposed boost to missions as offset for flipping termination, at least for passengers.
As I thought before though re: flipping and passenger vip missions, passengers vip are ok - not going to be hysterical about it - flipping helped optimize some missions but at Allied, was able to fill ship just fine before and now with new change. (Anaconda at Hauser and Python at Robigo Mines). So far as filling up, just a small delta if any. However as predicted, getting the certain type of G5 mats is harder - not hugely harder or hyperbole like that, just somewhat harder.
*this may be lot harder though and different for short range bulk passenger missions, as there you really did need to flip a lot to fill up, but as that is no longer meta and vip passengers is the thing, that's all I recorded before the new update.
So for VIP passengers, the impact is mostly for G5 mats - before you could flip to get all same reward type you wanted, say bioconductors only instead of some MEF and EFC mixed in, now you just take what you can get - which is to be crystal clear, still decent - just not as optimized.
So passenger missions for credits and mats? Almost no change for credit purposes, maybe 10-20% off since we can't flip to take another 5M mission instead of settling for a 2-4M one but nothing to cry about. Some change for mats, but it's more a paradigm change - gotta slowly fill up on multiple mat types at once and not just chase 1 at a time, which kinda sucks since you can't trade data for manufactured or vice versa at material traders, so it makes complete logical sense to pursue only 1 type if that's what you're needing to trade with.
Overall though passengers didn't get much nerfed. What still sucks is matching up your desired activity type - despite the dismissive types saying 'just goto the right system and BGS for your missions..' it doesn't work that way. It's total RNG what you get, and you can sit in a boom state refinery/extraction all you want and it's total RNG where you get some mining missions instead of solo and wing massacre missions galore, or sourcing or whatever other random mission type it spawns.