Probably just some early FOMO near release but things not looking so rosy lately.You can become a source too. Just send emails with "leaks" and claim you work for retailer and somehow this retailer has the inside track.
All of their sources are employees at stores.
MLID also made a video claiming the 4070 ti wasn't selling well. This was after a large german retailer was publishing data showing lots of sales in the hundreds per week). He then claimed this was wrong because some people in individual stores in the US were claiming they weren't selling out.
Then the steam hardware survey came out showing lots of sales globally.