I'm afraid I disagree with most of that. Let's not assume all big torrents are site rips.
Downloading individual files is not a great chore in the scheme of things
You are assuming people will know what they are looking for. Part of the 'charm' of torrents is stumbling across things you didn't know about.
File names can be very useful.
Downloading a part-torrent means you will never become a seeder for that torrent. You can still seed the parts you have but you will always be a downloader.
A well made torrent will haveโฆ
Can't disagree with that but not all torrents are 'well made'.
So I still prefer individual torrents