You're really overestimating how many people can draw something "decent" in Inkscape. Most likely they will take a template. That's not necessarily better than AI either.
A template is perfectly fine to use
I don't claim to be an artist and a template is still done with the caring eye of a professional. It's way better than an AI generated poster. Or at the very least, there's many less instances where I've seen overly used templates than I have badly designed AI generated designs.
> a template is still done with the caring eye of a professional
.. except when those are also AI generated
Why are you talking in hypotheticals when we have lived before the AIpocalypse and posters were not at all as horrible as they are now.