Sending SMS from the laptop can be nice for the same reasons I sometimes use the web versions of WhatsApp, Messenger and Telegram (days of long conversations), but making calls... Do they hand over to the phone if you want to walk to another room without bringing the laptop with you? I start only business calls on my laptop with Skype or Hangout, because I know I'll be at the keyboard working while speaking. Calls with friends, those start on the phone almost always.

App integration between phone and laptop looks nice but in fact for most people all it matters is email and files, mostly pictures and musing. Those are covered by Google and possibly by Dropbox, plus some streaming service.

Anyway, yes, even a slight edge over the competitors is better than no edge.