Now, take a look at the 5-pager bitcoin whitepaper vs. the yet-incomplete LN 50 pages whitepaper; this is just a relative not an absolute complexity comparison but you get the gist."
The 5page whitepaper is complex. You just can't understand from reading it unless you have a PHD in computer science. Once you have understood how Bitcoin works, getting the idea ..
Btc bch and BSV are interesting Bitcoin forks. I'm not on a specific side, these are differents projects and have different vision, they don't compete with each other