I've made a product. The people who use it, like it. But I have no online following or presence, and I'm really not the kind of charismatic person who could build one. All the "community" places where I could share it in good faith are incredibly hostile to self promotion, I think because of the wave of people selling vibecoded openai wrappers as language tutors.
I can pay £40 for reddit ads, and while it has negative ROI, it gives me lots of feedback that I can use to iterate. Sure, my project seems to be a commercial dead end - people find it valuable, but most people don't find it quite valuable enough to pay for the high cost of translation - but I still think those ads had a lot of value.
That said, I use an adblocker myself, I wish more intelligent people worked on rockets rather than targeting algorithms, and I do agree that ads have a negative effect in a lot of places - it's just that they do have a real (and IMO moral) utility in some places. If you banned advertising for everything, you'd just encourage bribing moderators to let you self-promote or ensure only people with existing followings can make things.
(it's https://nuenki.app, if anyone's curious)