It's been a wonderful X-Windows feature on UNIX systems for ages, which Linux inherited. Select and middle mouse button paste is so ingrained in me, I can't function without it.
Of course those things matter. What is important is that minus the social media, we as a society need to build healthy and affirming alternatives to compensate for this gap. The hard part is figuring out what forms those should take and how to keep them from having similar pitfalls.
Get 'im, boys!