> It’s like these products that are in a way some of the most valuable products in the planet, are given a junior web dev and a “UX designer” who really doesn’t know anything about UX.

What you pay attention to grows. And company's pay attention to those things that move the needle on revenue. For many successful platforms UX doesn't move the needle much anymore (if it ever did). LinkedIn has effectively won their space and a clunky UI isn't going to show up in the numbers.

LinkedIn might have amazing designers on staff, but if leadership isn't prioritizing updates and fixes it won't happen. And leadership won't prioritize it until the problem shows up in the numbers.