What makes you think they're not? I don't know why these tools are sluggish, but I disagree with the notion that algorithms don't matter for "real-world software engineering".

The world is full of slow software because one chose the wrong algorithm: https://randomascii.wordpress.com/2019/04/21/on2-in-createpr... https://randomascii.wordpress.com/2019/12/08/on2-again-now-i... https://randomascii.wordpress.com/2021/02/16/arranging-invis... ...