The Mutation Situation!

Over the course of Earth's history, life has slowly evolved via random changes to the genes of offspring which might grant them a better or worse chance of survival. Humans are not exempt from this, despite how much they wish to believe they are.

Over the centuries, humanity became slightly more agreeable, social, emotional, maybe just a bit dumber, and are ever so slightly more likely to spontaneously combust, among other minute edits.
These evolutionary changes pale in comparison to those creatively referred to as the mutated: individuals (although, not just humans can mutate to this level) gifted with extraordinary abilities thanks to reality collapsing in on itself, which paved the way for the superpowered scene, millions of taxpayer dollars in property damage, and "entitled twenty-somethings taking the law into their own hands" (as J.J. Jacquemond would say, anyway).

Spot the Difference

Mutations present differently in featherless biped, but the identifying humans, mutates, and mutants is determined by two factors:

• If a mutation has occurred
  It's currently unclear whether or not there's a probability to who's mutated and who isn't, since findings indicate it's unbiased and arbitrary. So, we're just relying on whether or not it's occurred.

• Context, if applicable

It seems to appear most commonly in people's preteens, but one may also mutate during early childhood or near the end of one's life. If this occurs naturally without any sort of external stimuli, such individuals would be referred to as mutants — Homo superior.
Other times, this happens in response to an event that causes abrupt mutagenic change, including but not limited to: severe emotional distress, 'contagion' from another mutated being, mental episodes, etc., which would classify an individual as a mutate — Homo medialis.
People who don't mutate ever in their entire lives are your regular Homo sapiens.

Anti-Mutant Views

Among mutated communities, there's been talk of discrimination and negative views from non-mutated humans regarding mutations and mutated people. Sure, it's a bit ironic considering how much society loves supers, but the fear and wariness surrounding mutations isn't completely absent.

Humans have never been trusting of the unknown nor those different than them. In fact, when mutated people began popping up more and more, devout folk had assumed a sort of Doomsday — or some other event hailing the End of All Things — was transpiring. Therefore, mutated individuals were treated with suspicion and wariness if not outright distaste.

However, most modern dislike stems from fear. Not because of the whole 'otherness' thing, but because people were worried if every thought in their minds were being secretly read, if their neighbor would self-destruct at any moment and take out the whole neighborhood with them, if the person they were talking to was going to immolate them into smithereens, if they would be sliced into ribbons via laser eyes, if the guy at the local gym would rip them in half with super strength…
The possibilities are literally endless, which is certainly not helped by the yellow journalism surrounding the superpowered scene and internet platforms prioritizing sensationalism and/or disinformation that's eager to scare. But also a lot of the legitimate news regarding supers is absurd enough that it's bound to sound real regardless of how ridiculous it is. And so, the cycle of fear and hatred continues.

Trivia

• No, harboring anti-mutant views doesn't qualify someone as a racist because those are two entirely different beliefs aimed against two entirely different groups of people.
• If someone's mutation is removed somehow, documents would still be refer to them as a mutant/mutate with the addendum of removed superhuman abilities. Whether or not the individual will still refer to themselves as mutated or not is up to them.
• In databases, a mutated individual's original species is specified for the sake of recordkeeping (e.g., "human mutant")
• A prominent anti-mutant belief is that mutated people have a lab experimentation fetish. There's a whole conspiracy theorists regarding mutants and mutates stealing children to experiment on them to their liking.
• Some of the mutantkind nicknames are from this video by BaitZaDust and its comment section.
• 'Baucher' is derived from 'debauchery,' but the assumption it's from 'botched' works fine, too.
• 'Mutite' is a portmanteau of 'mutant' and 'parasite.'
• Non-mutated people are sometimes called 'purebreeds.'