WanderingPhilosopher, look, I don’t trust Marapool. Either they or someone there might have bad intentions. I don’t want any fees, I won’t charge 3 BTC or anything like that, but feel free to try. I also have bills to pay, and energy is expensive here. I know there’s an easy tutorial with Marapool, but it usually doesn’t work, and it says it's offline. So I don’t trust it; I’ve tried it before, and it took a long time. I prefer to do it my way—nothing works better.
As for RBF, there’s a lot of FOMO (fear of missing out) and fear involved. It’s not easy to steal from someone if the parameters are set correctly.
Just because you couldn't get it to work, doesn't mean it doesn't. Several of us have tested this method and it has worked every time.
Spread solutions, instead of fear. Maybe if you post your fail-proof method, the solver may use it and donate you something. If not, I imagine they will use Mara or take a shot in the dark.