Yes websites have become more complicated[2]. HTTP Archive has been tracking that for a long time. But this isn’t new. And actually web performance isn’t getting worse, it’s been getting better[3].
0. https://www.speedshop.co/2015/11/05/page-weight-doesnt-matte...
1. https://web.dev/articles/user-centric-performance-metrics
2. https://httparchive.org/reports/state-of-javascript
3. https://lookerstudio.google.com/reporting/55bc8fad-44c2-4280...