Yes, obviously. If you limit PP to rewarding yourself, short-term, for starting unappealing work, then you should be fine. Otherwise it's just a huge resource sink.

I settled on a $1.20 pen model which I really like, a generic notebook and have kept the resolution not to even look at any more stuff (okay, I read about Zettelkasten but resisted the temptation to try it). This sort of works for me.

I will keep quiet on how much time I had spent researching various productivity-related crap :)