That's the exact argument being used to justify the over-regulation and banning of e-cigarettes. Because tobacco companies abused the public trust by selling known-to-be-unsafe products and marketing them to children, people are simply assuming that e-cigarettes are the same, and over-regulating them from the get-go. There's more than a little irony in that.The rules are in place as they are specifically because they have been abused in the past, and taking those rules away would only invite things to be abused once again.
Just as politicians don't get that e-cigarettes are very much different than tobacco products, you're not getting that mod makers are very much different from distributors. Just as politicians are ignoring the fact that there are no significant evidence of health risk associated with e-cigs (and a decent amount of evidence to suggest they're demonstrably safer than tobacco), you're ignoring the fact that the makers who are hurt by the current rules haven't done anything to deserve it.
It's this lazy-leadership practice of "over-regulate first, ask questions later (if at all)" that this site has several forums dedicated to preventing. And yet here you are doing basically the same thing. There is no indication that the garage-modders would instantly start spamming every thread with advertisements if there weren't blanket bans on their posting without a multi-month approval processes. If someone did do that, then it is a simple matter to discipline the offender. But placing severe restrictions on an entire category of people just because one of them might do something wrong is just plain bad practice.