Yes I agree, VOXR comes to mind as one of the bigger shell pump and dumps I've ever seen. I think iHubbers approach shells more cautiously now after the shenanigans that went on there.
In general it's best to avoid the rumored RM pumps those are the worst. I typically don't even care for the pumps solely based on an SOS filing as often times iHubbers will take liberties with that info an make up a boatload of BS to go with it. Also, its very easy to falsify SOS filings, I have seen it happen before in order to con people into believe a big merger was happening.
I may or may not participate in those it really depends on the supporting DD but the ones that are solely some rumor created from the figment of some iHubbers imagination like VOXR I'd pass on those for sure....lol.