For example, if your machine has a lot of RAM doesn't mean all apps should then use as much of it as possible.

they handled this with 4 1x dynos on Heroku (before switching to AnyCable they had 20 2x dynos for ActionCable).

The problem is that these are not static assets. The raw file view, like any other view in a Rails app, must be rendered before being returned to the user. This quickly adds up to a big toll on performance. In the past we’ve been forced to block popular content served this way because it put excessive strain on our servers.

It’s an incredibly amount of overhead and waste. Packages increasingly consume more hard drive space, increase installation times

And no need to walk backwards through all these strings which is surprisingly inefficient in Ruby.

Before a bug can be fixed, it has to be understood and reproduced. For every issue, a maintainer gets, they have to decipher what was supposed to happen and then spend minutes or hours piecing together their reproduction. Usually, they can’t get it right, so they have to ask for clarification. This back-and-forth process takes lots of energy and wastes everyone’s time. Instead, it’s better to provide an example app from the beginning. At the end of the day, would you rather maintainers spend their time making example apps or fixing issues?

For example, what if your site has a customer interface and an “admin” interface? If the two have totally different designs and features, then it might be considerable overhead to ship the entirety of the admin interface to every customer on the regular site.

remember that for each loaded iFrame, a DOM is created, HTML requests are made and document wrappers are instantiated, eating memory and bandwidth in the process

Disk space is an issue. Resource usage is an issue. Those new packages nowadays need huge amount of storage to finally do the exact same thing as their older and lighter deb counterpart. Whatever the price of storage, it’s the opposite of a progress, it’s not optimal at all.