I think we should just get rid of this rule that people can advertise within threads because it just leads to confusion. I'm not explicitly against users doing it but isn't it unfair that some threads are allowed to be monetised whilst others aren't? We already have a rule that says no adverts outside of the signature but with this exception users see others doing it and then assume that it's ok for them to do so and they can advertise in any of their threads they want without prior permission.
It's obvious some users are just creating threads so they can try monetise them and this will only become more prevalent as others catch on. Look at the thread given as an example in the op. Not only does it have a blazing advert at the top of it he's also trying to monetise it in two other ways. He's left his bitcoin address at the bottom asking for tips and another alerting users to tell who sent them (probably because some of them offer kickbacks when someone sends them business their way):
Tip accepted here:
33TyVkHTqic4UNVB4UQ6QLLmXzaqmRY7F9If you get a Bounty Manager from here please say that you've reached them through this thread made by me.