Ideally, I'd rather pedophiles be fucking child-shaped dolls than actual children. It's hard to make any opinion here without any objective data.
My knee-jerk reaction is to say no to (most) things being outright banned. I see little good taking away one of a pedophile's few sexual outlets, especially if they keep a pedophile from preying on real kids. I'm of the opinion that so long as people (including kids age < 18) aren't being harmed, they can have that outlet. This relies on an assumption that pedophiles aren't necessarily predators and that sexual outlets stave off predatory behavior.
That being said, I don't want pedophilia normalized as a fetish. I don't know how I would feel about these products becoming popular; without data, it's harder to speculate. What if these child-sized dolls caught on because they were more affordable? I doubt that would happen if they looked like kids, but what if they dolls were made so that they could look like children (picture something like an adult build-a-bear workshop)? That seems more realistic, given the internet, but does that layer of nuance change anything? I find it hard to draw a moral line here, but there could be something I'm overlooking.
If one wanted a sex doll and a company sold high quality dolls of varying prices and sizes, it could be that the smaller ones are less expensive because they use less materials. Should they be banned on the sole principal that they look like children, or that they're sex toys and look like children? What if the product was child-sized but the customer had to make them look like children? Would you want their fucked up sexual needs to stop you from being able to buy a blank toy? And if not, why is it wrong for the company to bridge that gap for their customer?
All of those questions could be invalidated by the right data, so I'm up in the air as it stands now. The only thing that I can be certain about is that these dolls (or their sexual parts) will be restricted to adults due to their nature. I feel that is the most fair regulation you can put on the products since it already limits access to children and makes it illegal for them to be exposed to it. Anymore regulation could easily become a bureaucratic nightmare and another taxpayer burden.