If you want to, you can buy all 40 Gbps 240 W Thunderbolt 4 Pro USB-C cables for all use-cases, but they're literally like $100 a metre, so that'd be insane and why instead there's a variety of cheaper cables for different use-cases.
Edit: different devices add even more to this confusion. My MacBook Pro M1 is refusing to work with a 4K USB-C monitor even when using a Thunderbolt 4 cable. LG is convinced that it should be working just fine.