Many dog related tokens were created with a substantial amount of the supply sent to Vitalik Buterin. It was expected that Vitalik would never use these coins in any way so they were as good as burnt. However, Vitalik has now donated large amounts of these tokens resulting in a major drop in prices.
Tokens like Shiba Inu (SHIB), Akita Inu (AKITA) and Dogelon (ELON) had all sent large % of tokens to Vitalik when creating the tokens.
There is no financial advice in this video.