I feel like people really don’t get how important Porthos is and why some fans are so protective of him and by extension the portamis ship. Fandom and in particular slash fandom has a distinctly racist tendency to pass over characters of color, especially black characters, in favor of white characters, to declare them ‘unshippable’. It happens to Rhodey in the mcu fandom where he is even erased as Tony’s best friend to be replaced by Bruce. It happens in the Sleepy Hollow fandom where people bemoaned that there were no hot dudes to ship Ichabod with despite there being multiple hot dudes, Frank Irving, Luke Morales, and Andy Brooks, that have easily shippable relationships with Ichabod. But no people would rather write about the bloody stump of the headless horseman going down on Ichabod than a man of color. (not to mention the Katrina Crane stans incessant attempts to denigrate Abbie Mills and the ichabbie ship on the het side of things) In Pacific Rim the hot dads ship is an infinitesimal speck compared to Newt/Herman and in general the way the fandom treats Stacker Pentecost is pretty deplorable (and again, with the het ships many fans have come up with laundry lists of reasons for why Mako Mori should not be shipped with Raleigh, how it ‘ruins’ her character) I don’t want to delve too deeply into that rabbit hole but sterek is essentially a whitewashed Scott/Derek. Hell I could take this all the way back to the Harry Potter fandom and talk about how the only time Blaise Zabini, resident cool and collected hottie of slytherin house, was deemed shippable was when his race was literally erased and he was whitewashed in fic.
The point being that whenever there is a character of color who is important to the canon, who has important and prominent relationships in canon you can be almost entirely sure that fandom will erase and ignore that character, will downplay the significance of that character and their relationships. So the fact that Porthos is so well loved by fandom, that portamis is arguably the otp of this fandom? that’s worth protecting ok. It’s worth defending, especially from pretty racist assumptions or ‘jokes’ about Porthos that are based on stereotypes about black men, their sexuality and their masculinity.