Trampeling is a form of BDSM, where a female dominatrix will wear high heels or other forms of pointed footwear and walk on another person. It's not a huge within the BDSM scene, but it's large enough to be recognized as a BDSM kink. That being said, anybody that called spanking, whipping, or choking "trampleing" would be objectively wrong, as those other forms of content are missing key parts that make Trampeling appealing to those that have that kink.
That's exactly what's going on with the NTRrrreeeee people. Is NTR in the same realm as sluttification/bimbofication...sure. But to call all sluttification and bimbofication content NTR is objectively wrong, because sluttification and bimbofication are missing key parts that make NTR appealing to NTR fans. I don't make NTR, namely because it requires a lot of emotional dialogue and I am a robot. Does not compute.