Lena has been used for years and this use doesn't necessarily result in you being "cancelled", it might make your colleagues say "hey, can you use something other than lena?" though. The model is a pretty private figure (as she said, she’s not a model anymore) and has not given us any reason not to respect her wishes, so if she has asked the community not to then it's only decent to refrain from using her picture.
Trump is an extremely controversial person who has stirred up no end of trouble and in addition he has directed more than his own fair share of bodyshaming towards others. It does not surprise me in the slightest that people are not willing to extend him the courtesy of not sharing a picture of him that he doesn't like.
I'm not in the business of using or distributing these pictures, so I am quite happy not using either. I'm just attempting to explain why people feel this way. I personally quite like the Ethically Sourced Lena, it made me smile :)