[mrkline]

> If a library has 100k lines of code but the parts you use are only 1k lines of code then why is that worse than a library with 1k lines of code?

There's nothing wrong with not using the whole feature set of some library. But if library A does the same things as library B with a third of the code, isn't that better? (All other things - e.g. perf - being equal)

> That's true right until the moment you do need them and then you need to rewrite a lot of code.

There's plenty of applications that will only ever need a handful of connections. Probably most applications.