Are they right? Yes, to a point, but unfortunately many writers go well beyond that point.
Here's the thing - don't start your story with a wild car chase, guns blazing, tires screeching, people tossed around inside the cars and a big explosion at the end if what you're foreshadowing isn't a 'pedal to the metal' action story.
Yes, your story needs a good hook, and yes you want to grab those readers by the eyeballs. But, and it's a big but, you don't want to send your readers off in the wrong direction. You don't want to prime them to expect one thing and then deliver another.
If your hook has become a gimmick you've lost the game. If your hook doesn't provide the springboard into your story it isn't doing its job. If you as the writer have contrived the opening hook just for the purpose of 'hooking' and not moving into your story your readers are going to catch on fast and they're not going to be happy with you.
If you do, great, use it, move on.
If you don't, write your story, read it again...and again...you're going to have to anyway in the editing process. Then let that hook line evolve and use it to kick off a really great story.
Readers are gold. Trust them. Consider who they are and what they're reading for. That magic hook will appear.