Is it possible that "people of color" account for 90% of the total people who jaywalked in NYC in 2019? Unless all data and all variables in the argument are made available for inspection, it is difficult to derive any meaningful conclusions.
No.
I cannot say this in strong enough terms: every single person in NYC jaywalks.
Jaywalk ticketing is part of a longstanding policy of the NYPD, which is to use any occasion that presents itself to frisk people they deem "suspicious." The NYPD's definition of "suspicious," in turn, looks a lot like a colorwheel.
I'm sorry, but what exactly are we supposed to derive from this claim? That unprompted police frisking under the pretense of jaywalking is acceptable so long as the jaywalker is a member of a vulnerable class?