Historically, many new to RVing RV buyers use the RV a lot the first year or two and then get distracted with the rest of their lives and do less and less with it. By about the 5th year, they see it sitting in the driveway or they see the storage bills and decide they should sell. They willingly take a loss on it because they realize they are throwing money away having it sit there. A small few hate the RV so much they want to sell it within months of buying - but they want what they paid for it.
With the pandemic, many folks wanted to believe that new to RVing RV buyers were somehow different than in the past and they would "hate" it so much they'd just want it to disappear at any cost.
In reality, they are the same as always. They aren't going to sell until the RV has sat for a few years. If they do sell now, they want the full price.
Those who might have been ready to sell now are hanging on to their rigs because of the pandemic. The RV has become an "in case of emergency" plan for them. They will wait until the pandemic has been over for a couple or so years before selling.
It was all fortunetelling and no data and research.