PDFs are small files. 40Mbps is way more than enough for that. Same for PPTs.
If you're regularly dealing with huge video files, then sure, you may be in the small minority that really does benefit from an extremely fast connection.
No, a 200Mbytes PDF file is not small. Especially when it's sent on the spot by a participant in a zoom meeting. I don't want to wait 2 minutes, I want to have it as soon as I click the download link.
And yes I regularly have PDFs and PPTs of that size (thank you web agencies that keep on sending 20 pages product kit with 8K background pictures).
I do agree it's overkill and we all could do without if we prepared better but that's how it is.
If you're regularly dealing with huge video files, then sure, you may be in the small minority that really does benefit from an extremely fast connection.