Does this mean that UX professionals are getting worse? No, rather the opposite: The UX-design community and our collective knowledge and experience, which shows that we as an industry are getting better.
Does this mean that UX is less critical or impactful today? Probably not - it just means that experiences overall are getting better, and thereby user expectations have gotten much, much higher. Even small improvements in the UX may be worth the expense. Getting 75% more people through your sign up flow (the average improvement score in 2020) is certainly not something you would say no to. As a comparison, it was 247% in 2006-2008.