In contrast, the link you shared is perhaps the direct filings that the SEC receives from the company, which may remove these designed elements prior to filing.
-----
[1] https://ir.netflix.net/financials/annual-reports-and-proxies...
"One fine day, as I was following the internet rathole, I landed myself on the Netflix investor page for some reason. One thing to understand about these 10-K forms is that these are …. pretty basic."
Like the vast majority of companies that just need to comply with their regulatory requirements.
Why did Netflix slowly stop designing their 10-K reports that lived on their own investor relation page?
My own guess is that there was some downward pressure to just produce the basic report, since that's all the government would see and investors wouldn't really value the design.
Except joke is on them because XBRL and the GAAP taxonomies allows "extension concepts" or tags(1) which basically means "we can make up our own reporting identifiers and you can't do anything about it" and makes categorizing accounting data very difficult across companies.