Why not use the tor repos of debian in the sources.list file?

I was seeing the default sources.lis file and it comes like that as default:

deb Index of /debian buster main contrib non-free
deb Index of /debian-security buster/updates main contrib non-free
deb Index of /debian buster-updates main contrib non-free

Why not use those instead?

deb tor+http://2s4yqjx5ul6okpp3f2gaunr2syex5jgbfpfvhxxbbjwnrsvbk5v3qbid.onion/debian buster main contrib non-free
deb tor+http://2s4yqjx5ul6okpp3f2gaunr2syex5jgbfpfvhxxbbjwnrsvbk5v3qbid.onion/debian buster-updates main contrib non-free
deb tor+http://5ajw6aqf3ep7sijnscdzw77t7xq4xjpsy335yb2wiwgouo7yfxtjlmid.onion/debian-security buster/updates main contrib non free

I also noticed that there’s no tor repositories to update it directly, would that not be a good idea also?