You have to got remember litecoin was still under $100 on December 1, 2017. The ath was over $350. I do believe news of the creator selling his litecoins slowed the price down. The ltc fork pumped the price because people wanted the airdrop. I might grab some more if the price ever dips to $150. I don't think $210 for 1 ltc is considered cheap. But with news of litepay, I see a great year for litecoin.
He was indeed doing that,he announced last year that all of his share were given to some charity but the truth is its just his strategy so it wont be obvious that he is selling his shares to get a lot of profits from his own coin,for sure he has millions of supply of this coins,which makes harder for the coin to improve its price.