HDR is possibly an excellent case-in-point. Most of the ghastly "Harry Potter on drugs / over-clarified / over-saturated" images that people have come to mis-associate with being HDR aren't HDR at all; that effect comes from ultra tone-mapping. True HDR isn't a "look" - it's a technique (or set of techniques) for capturing an image where the dynamic range of the scene exceeds the dynamic range capability of the camera.
Or to put that another way, if the photographer doesn't have the ability to create an HDR image then there will be certain types of scene that they won't be able to capture eg this scene below, which is a composite of 5 different exposures to minimise the effect of shooting into cloud that's directly backlit buy the morning sun, and yet still reveals shadow detail.
Personally, I consider this to be a successful application of HDR to produce an image that wouldn't have been possible to capture by other means -- I certainly wouldn't consider it to be an "HDR Trick that would put anyone off HDR for life".