Is it true you need as ASIC to mine Litecoin?

I am new to this. From what I read online, you can not use asics to mine litecoin like bitcoin because litecoin is scrypts not hashes and asics dont do scrypts. But someone on reddit told me you can not mine litecoin with cpu/gpu and you need an asic.

Can someone with experience clarify this?

I have no experience mining, but I know that there are specialized ASICs for bitcoins such as the Antminer S9 and specialized ASICs for litecoins such as the Antminer L3+. You cannot mine litecoins with the S9 and cannot mine bitcoins with the L3+.

thank you for your response