Litecoin is a very well known coin. At some point it was known as the silver to bitcoin's gold. While other coins such as Ethereum have displaced LTC from its second place, it remains a very important coin / altcoin. Any serious webmaster who accepts crypto as payment should include LTC as an option. It is a well established altcoin, its not like Mr. Lee went to work on some random altcoin like flappycoin or wathever :P