I think Neteller is an old dinosaur, and it's slowly going extinct. Neteller was being treated like a pariah deposit method years ago by an increasing number of casinos. Neteller VIP hosts were burying their heads in the sand, no doubt on the instructions of management. I raised this problem with my VIP host many years ago when Ladbrokes joined the trend (it was still MGS and listed on CM) by banning Neteller deposits from all the daily promos like the scratchcards. Since then, Neteller deny there is any such problem, yet there clearly is if players take the time to read the terms.
This is simply the next step, rather than having special terms for players who use Neteller, the method has been booted altogether.
However, casinos are still taking a business risk because although cards work far better and faster now thanks to the faster payment directive, it also allows banks to snoop on their customers, and some have had mortgages and loans declined simply because of a couple of pretty low level gambling transactions on the account. Credit card providers have also begun to move away from the gambling industry as they are the ones left with the bad debt when a player goes on tilt.
For players, the best way to approach this is to have a separate bank account at a different bank group to their main one and put all their gambling transactions through it. Your main bank won't see these transactions when you apply for a mortgage or loan, they will look at how you have run your account with them and what's on your credit file.
From my experience, Neteller withdrawals are only a day faster than debit card. The main issue I find with debit cards is the banks' automated fraud lock where they will randomly block a regular casino deposit and then the card itself is blocked until I phone the bank and go through a security sequence, which can only be done "during office hours", to unblock that merchant and the card.