Hot take incoming: most Pinterest advice for affiliate newbies is completely backwards. Everyone tells you to set up a scheduler straight away and blast out five pins a day. That's a guaranteed way to burn out in a month and quit before you've learnt a thing.
If you're just starting, post three to five pins a week manually for the first 60 days. You'll see which pins your audience actually saves versus scrolls past. You'll figure out what your pin templates look like when they convert. You'll get a feel for how the algorithm behaves. Then, once you've got real data, you can automate.
The schedulers themselves aren't the problem. The problem is automating something you don't understand yet. Manually posting early on builds intuition - you start to recognise whether a flat result is a creative issue or a strategy problem. That's the kind of insight no tool can give you.
One of the replies in the thread nailed it: learn first by hand, then scale. If you find one solid product, affiliate commissions can turn into a comfortable recurring income stream. But you need to know what 'good' looks like before you try to amplify it.