The creators didn't dump, anyone can see their accounts' balance as they're public
https://blockstats.pw/deeponion/ and they keep working hard in the project. Nobody is getting banned from the signature campaign, which finished months ago.
If you sleep better spreading bullshit, ok, good for you. Many altcoins lost 90% from the ATH in this massive bear market after such a massive December-January pump, but remember that Onions costed zero. Basically what you're saying is almost the same as that the creator of the Bitcoin dumped for millions, that it is a scam and that it won't ever go back over seven thousand dollars.
DeepOnion is still a really robust project. And it's a real pity that members of the community that once supported the project are behaving this way against it, spreading nonsense and FUD, just because now they're affiliated to a competitor project or by simple ignorance.
I include myself, I support a competitor project as you can see in my signature, but you should learn that trying to discredit a competitor you won't benefit the other project you support. It's not just a matter of justice or truth, it's that you don't help yourself in any ways. Privacy coins are here to stay and there will be a big cake to share for anyone that is already in, in any of them.
I repeat, imo DeepOnion is a really robust project that has proven to have high technical capabilities and a committed community, and I foresee a great future for it when the overall crypto market cap reverses (for all the coins in general but for high quality ones in particular, and DO is one of them, you only have to compare it's thread with any other project's here in Bitcointalk and the real interest it has gained over the months).