When you do `smthin | less' the other bazilion options are loaded in less, using resources. If you want to have a quick look a the help you can get overwhelmed by all the information.

Having so many options in less can be seen as over-engineering. Bloating the system. There are duplicate features, features that probably don't belong in less etc. It goes against the minimalism of Unix.

It probably isn't a big deal in this case, but as a general rule being simple and lean is a feature IMO.