Yeah, you can debunk this trivially with cronometer.com which kinda reveals how many people repeat things without looking.
It’s like when people regurgitate that “add rice to beans for a complete protein” meme without realizing that rice is less dense in every amino acid, and beans have every amino acid in similar qualities, and you can simply eat more protein dense plant sources if you need more protein.
I eat 550g extra firm cooked tofu and 230g tempeh daily. Plug that into cronometer and show me the plant based amino acid hole.
(Plus tofu is fine here)