Yes, if your only objective is to get Facebook likes don't do that.
And by the way they don't seem to get Facebook. Or Social Media Advertising.
But I hand to them that 'like' has become a random thing.
However this is not about "getting" (and bragging) this is about "not getting"
But you're right, if the person is bragging this is usually a red flag.
It's like someone bragging about "How they know how to write stories with Word" or how they can totally "Do calculation with Excel"