The idea here is to make it harder for the public to access banned websites. Tech savvy people will be able to recompile their browser from source anyways, just like they can easily work around DNS-based blocking and pretty much every blocking attempt, even the "great firewall".
It is mostly a punishment for services that don't comply with the rest of the law. By blocking it in the majority of browsers, it will drive away a lot of traffic.
Anyways, I don't expect that part of the law to pass, and if it does, it will be very unlikely to be enforced, France is a major economy, but I don't think it has the international power to do that, call me back when the entire EU or the US is on it.
By no coherent definition, though. Just by professional convention.
I don't know of any online service that expects end users to use something like wget and curl, maybe in niche cases, or for personal use, but I don't think it can be considered a primary use case for these software.
[1] which I would absolutely do if legislators are stupid enough to pass this law. No one gets to control what I read.