At first it's your core responsibilities to secure your participants payment as a bounty manager.
All bounty manager's should put their participants first and not what they received as payment to manage the campaign, whenever I noticed delay in bounty campaign then I term it upon the campaign manager because they were only interested of what the project will pay out to them at that very moments otherwise, what they could have think is to set a standard of securing participants payment before even launching the campaign. I think there are some bounty manager's who is accepting escrow before launching their campaign, this shows that their participants is their most priority than just rushing to accept a campaign and launched before even thinking of paying bounty hunters.
At this point whom do you blame, yourself or the project owners? To me you have yourself to be blame, excepts you made it clear on the campaign thread that bounty is going to be distributed by projects owners that anyone joining is at their own risk. If the project doesn't pay then no one is permitted to hold you responsible.
You start by saying that managers should secure payment and not worry about their own pay only, then you end with as long as you put a disclaimer it's ok. You are just a walking contradiction IMO and shouldn't comment just to comment.
Just because a manager doesn't secure a payment doesn't mean they were in a rush. Promises might have been made by a team to the manager, token may not have been generated yet, or whatever other bullshit excuse a team tells a manager. It's not the managers fault more then half the time. There are managers that will just accept any project and not care if anyone else gets paid as long as they do, but hunters should learn and not join that managers campaigns rather than just keep on joining and being disappointed.
Now, I do think that unless tokens are secured, bounties shouldn't be launched anymore. It's getting old to read the same shit over and over. Most don't respect bounty hunters but whether you respect them or not, if they did the work they deserve their pay.