You are right. I'm bitching about this because someone made a transaction on my behalf, even you check it has several layers of CFPP but then they just abandoned it. I can't do anything whatsoever to persuade a miner to include the transaction except a transaction accelerator which costs more than the whole transaction is worth by several factors.
This is why I'm never using phoenix or acinq stuff for anything valuable ever again. They have left me in limbo by not finishing the job and getting that transaction through before it has aged a week, which is today. No matter what. Phoenix wallet has confiscated nearly 10% of my income over a piddling few dollars of fees that nobody at acinq can be bothered to manually check and clear.