I think litecoin is not the only one affected in this manner, there are many orders that are currently far away from their last all time high and we may take the only excuse to be the fact that we have not yet a matched into the altcoin season, whereby majority of them will still have the ability of displaying what they are capable of, so it's all about holding the more and waiting to see how they could perform in the coming bull run for the altcoins.
You are getting it wrong, altseason does not mean many old coins will get to all time high. Most altcoins once they are old, they will not get to all time high as investors shift their focus on other coins, just few of them will get to all-time high.
There was altseason in the last cycle, but people did not call it altseason because bitcoin marketcap remained above 60%. Ethereum that always take part of the marketcap during altseason did not increase as expected. At least ethereum was unable to get to $10000 that people predicted. It did not even go above $5000.
The person I quoted mentioned ethereum and litecoin, which I saw as good coins, but litecoin disappointed people. It is not just one of the altcoins that people count as shit coins. There was a time that old altcoins pumped, ethereum also increased at the time, followed by the privacy coins. Litcoin did not increase very well at the time but later fell to $50 where it was rising from initially.