"Bishop Ford Central Catholic High School used to occupy this large building at 500 19th street, but closed in 2014 per wikipedia. The building as a whole is now referred to as the Bishop Ford Educational Complex, housing three distinct separately named schools: Brooklyn Urban Garden Charter School; MS 442 Carroll Gardens School for Innovation; K280 School of Journeys. These schools should be added to the map and the existing name updated or deleted"
OSM snapshot date: 2023-09-20T00:34:57Z
POI name: Bishop Ford Center Catholic High School
POI types: amenity-school internet_access-wlan
#organicmaps android

"Out of business. Replaced by restaurant called Mexique Cafe"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2023-09-20T00:34:57Z
POI name: Giocare Play Spot
POI types: amenity-childcare
#organicmaps android

The entirety of Seeley Street is now a one way (the allowed direction is toward McDonald Ave). 20th Street is also now a one-way at this intersection (allowed direction is toward Terrace Place).

Unable to answer "This shop has been vacant. What’s here now?" for node/419361808 via StreetComplete 53.3:

Mikado Japanese restaurant

2nd Place between Court Street and Clinton Street has a sign indicating No Trucks except local deliveries. Please add hgv:conditionalno=* @ (delivery) to this road segment. (I'm not talented enough to split this road into segments myself.)