The article tries to guess why they're doing this, but doesn't give weight to any of the theories. Just sort of shrugs its shoulders and says, "Well, ain't that the darndest."
Stupid people buying cheap stocks.
Short covering which is "the buying in of stocks or other securities or commodities that have been sold short, typically to avoid loss when prices move upward." Which is all different kinds of crazy.
Court proceedings which almost never benefit the investors benefiting the investors this time. So a stupid gamble.
Robinhood amateur traders (basically /r/wallstreetbets) being completely unpredictable (i.e stupid).