Being a pro generally means earning your living by practising your craft.
Many amateurs are more skilled than most pros.
That's a rather bold statement, don't you think? IMHO, some amateurs are more skilled some pros. If most pros were less skilled than many amateurs, then they would have gone out of business a long time ago. In fact, many of they already have, which means that all you'd have left are pros that produce exceptional work.
I've noticed this in my tiny corner of the photography world, and I'm sure it's happening in other segments as well. There was a time when many so-called pros were merely hacks with the right equipment and the right contacts. After the digital revolution, clients quickly realized that they could hire amateurs that produced equally good or better images at a fraction of the cost, or even for free.
With this new wave of cheap/free labor, the old-school "pros" that fell under the "hack" category are out of business, so the ratio of hacks to studs in the "pro" category continues to plummet as time elapses.