I think it used to be impressive when they created Bootstrap.
Twitter's website currently is not Responsive. The web interface looks different on every platform (mobile, tablet, desktop). And on mobile, the website is terribly slow.
i've often wondered if they deprioritised the mobile web frontend in order to get people to install their app (especially since they turned hostile towards third party apps). personally, it just took twitter from something i used to check frequently to something i check once or twice a day when i'm in front of a computer.
If you have a moderality complex UI, by making it responsive you are going to ruin it. That's why most serious websites with complex UIs don't bother with responsiveness and have two different interfaces.
This could be debated, atomic components within a framework built for a purpose can still be responsive.
Responsive or adaptive should be choice made at the start of projects and then ideally followed through till the end.
We choose responsive and made atomic components so it can work, but... it has to be in the thought process from design to implementation, the same can be said about adaptive.
Source: Our UI is complex, large, responsive and serves 3 million users and won awards.
Twitter's website currently is not Responsive. The web interface looks different on every platform (mobile, tablet, desktop). And on mobile, the website is terribly slow.