How did Tom Holland's Spider-Man gain his abilities?

A spider bit that has been genetically "engineered" A genetically "modified" spider bit Tobey Maguire's Spider-Man and Andrew Garfield's Amazing Spider-Man. 

Aside from a brief exchange between Peter Parker and his best friend Ned Leeds (Jacob Batalon) in Spider-Man: Homecoming,

Spidey's well-known origin tale was not prominently or at all included inside the Marvel Cinematic Universe. 

When he was initially revealed to audiences in Captain America: Civil War, the MCU version of the character was a fully-fledged superhero (or at least mainly). 

After three standalone films and several cross-franchise cameos, audiences have yet to see any indication of a radioactive spider bite.

A few years after Spider-Man: No Way Home shattered box office records and became one of the most successful MCU films of all time

 director Jon Watts finally stated what we all knew: Homecoming, Far From Home, and No Way Home all reflected the MCU's version of Peter Parker's origin narrative,

concluding with Aunt May's terrible death and Peter embarking on his adventure as a teenage superhero struggling to make ends meet in a low-income Queens apartment.

Even while the MCU has never openly revealed how Peter became Spider-Man in the first place, it hasn't prevented fans from concocting hypotheses. 

One individual in particular leads the charge. (You've probably heard of it).

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